{"id":12864,"date":"2025-09-24T07:14:59","date_gmt":"2025-09-24T06:14:59","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=12864"},"modified":"2026-01-13T04:05:29","modified_gmt":"2026-01-13T04:05:29","slug":"human-digestive-system-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/09\/24\/human-digestive-system-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Human Digestive System Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The human digestive system starts with _______________.<br><\/mark><\/strong>A) Esophagus<br>B) Mouth<br>C) Stomach<br>D) Small intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Digestion begins in the mouth with chewing and salivary enzymes.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. The longest part of the human digestive system is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Esophagus<br>B) Stomach<br>C) Small intestine<br>D) Large intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Small intestine (~6 m) is longest, main site for digestion &#038; absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. The total length of human alimentary canal is about<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) 3 m<br>B) 6 m<br>C) 9 m<br>D) 12 m<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Entire alimentary canal (mouth to anus) is ~9 meters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. Food pipe is also known as<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Trachea<br>B) Esophagus<br>C) Larynx<br>D) Duodenum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Esophagus carries swallowed food to stomach by peristalsis.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>5. The stomach is located in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/strong><\/mark>A) Thoracic cavity<br>B) Cranial cavity<br>C) Abdominal cavity<br>D) Pelvic cavity<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Stomach lies in upper left abdomen.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. The part of small intestine connected to stomach is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Ileum<br>B) Duodenum<br>C) Jejunum<br>D) Cecum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Duodenum receives chyme from stomach and secretions from liver &#038; pancreas.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. The last part of the small intestine is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Duodenum<br>B) Jejunum<br>C) Ileum<br>D) Colon<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Ileum connects small intestine to large intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. The large intestine mainly absorbs<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Proteins<br>B) Water and minerals<br>C) Vitamins<br>D) Fats<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Large intestine reabsorbs water, salts; forms feces.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. Vermiform appendix is a part of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Stomach<br>B) Large intestine<br>C) Small intestine<br>D) Pancreas<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Appendix is a small projection from cecum of large intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. The main function of the stomach is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Absorption of nutrients<br>B) Storage and partial digestion of food<br>C) Water absorption<br>D) Vitamin absorption<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Stomach stores food, mixes with gastric juice, begins protein digestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. The finger-like projections in small intestine that increase surface area are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><br><\/strong>A) Microvilli<br>B) Papillae<br>C) Villi<br>D) Cilia<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Villi + microvilli increase absorptive surface area.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. Which organ produces bile?<br><\/mark><\/strong>A) Pancreas<br>B) Liver<br>C) Gall bladder<br>D) Stomach<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Liver secretes bile, stored in gall bladder.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. Bile is stored in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Pancreas<br>B) Gall bladder<br>C) Duodenum<br>D) Stomach<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gall bladder stores and releases bile into duodenum.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">14. Which organ produces digestive enzymes and hormones?<br><\/mark><\/strong>A) Stomach<br>B) Pancreas<br>C) Liver<br>D) Duodenum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pancreas secretes pancreatic juice (enzymes) + insulin &#038; glucagon (hormones).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. Which part of alimentary canal has acidic pH?<br><\/mark><\/strong>A) Mouth<br>B) Stomach<br>C) Duodenum<br>D) Ileum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gastric juice (HCl) makes stomach acidic (pH ~1.5\u20132.5).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. Which part of small intestine receives bile and pancreatic juice?<br><\/mark><\/strong>A) Ileum<br>B) Duodenum<br>C) Jejunum<br>D) Colon<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Duodenum receives secretions for chemical digestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. Which part of alimentary canal absorbs maximum nutrients?<br><\/mark><\/strong>A) Stomach<br>B) Small intestine<br>C) Large intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Small intestine is major site of nutrient absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. Which part of alimentary canal absorbs maximum water?<br><\/mark><\/strong>A) Stomach<br>B) Small intestine<br>C) Large intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>   Large intestine reabsorbs water \u2192 solid feces.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. Tongue is attached to floor of mouth by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Epiglottis<br>B) Frenulum<br>C) Uvula<br>D) Tonsil<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Frenulum is fold of mucous membrane fixing tongue.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. The valve between stomach and duodenum is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Ileocecal valve<br>B) Pyloric sphincter<br>C) Cardiac sphincter<br>D) Anal sphincter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pyloric sphincter regulates passage of food into duodenum.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. Which organ secretes hydrochloric acid?<br><\/mark><\/strong>A) Pancreas<br>B) Liver<br>C) Stomach<br>D) Duodenum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Parietal cells of stomach secrete HCl.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. Which organ neutralizes acidic chyme with alkaline juice?<br><\/mark><\/strong>A) Liver<br>B) Pancreas<br>C) Duodenum<br>D) Colon<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b> Pancreatic juice (bicarbonate) neutralizes stomach acid.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. Rectum ends in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Cecum<br>B) Colon<br>C) Anus<br>D) Appendix<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Rectum stores feces before excretion through anus.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. The epiglottis prevents food from entering<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Esophagus<br>B) Larynx (windpipe)<br>C) Stomach<br>D) Pharynx<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Epiglottis closes windpipe during swallowing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. Which part of the large intestine is blind-ended?<br><\/mark><\/strong>A) Cecum<br>B) Colon<br>C) Rectum<br>D) Appendix<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Cecum is a blind pouch at the junction of small and large intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. The digestive enzyme present in saliva is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Pepsin<br>B) Ptyalin (salivary amylase)<br>C) Trypsin<br>D) Lipase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Salivary amylase breaks down starch into maltose in mouth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>27. The pH of saliva is about<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/strong><\/mark>A) Acidic (2\u20133)<br>B) Neutral to slightly alkaline (6.7\u20137.4)<br>C) Strongly alkaline (10\u201311)<br>D) Highly acidic (1\u20132)<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saliva provides an optimal pH for amylase activity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. The main enzyme of gastric juice is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Trypsin<br>B) Pepsin<br>C) Ptyalin<br>D) Amylase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pepsin digests proteins into peptides in the stomach.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. Gastric juice contains<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) HCl, pepsinogen, mucus<br>B) Bile salts only<br>C) Salivary enzymes only<br>D) Trypsin and amylase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Gastric juice contains acid (HCl), enzyme precursor (pepsinogen), and protective mucus.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. Pepsin is secreted in an inactive form called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Trypsinogen<br>B) Zymase<br>C) Pepsinogen<br>D) Renin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  HCl activates pepsinogen into pepsin.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. The enzyme that coagulates milk in infants is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Pepsin<br>B) Renin (chymosin)<br>C) Trypsin<br>D) Amylase|<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gastric enzyme renin helps in milk digestion in infants.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">32. Which cells in the stomach secrete HCl?<br><\/mark><\/strong>A) Chief cells<br>B) Parietal (oxyntic) cells<br>C) Goblet cells<br>D) Kupffer cells<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Parietal cells secrete hydrochloric acid.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. Which cells of the stomach secrete pepsinogen?<br><\/mark><\/strong>A) Chief cells<br>B) Parietal cells<br>C) Goblet cells<br>D) Endocrine cells<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Chief cells release pepsinogen (inactive enzyme).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>34. The hormone that stimulates secretion of gastric juice is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/strong><\/mark>A) Secretin<br>B) Gastrin<br>C) Cholecystokinin<br>D) Enterokinase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gastrin (from stomach wall) stimulates gastric juice secretion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Bile contains<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Enzymes<br>B) Bile salts and pigments<br>C) Enzymes and mucus<br>D) Hormones<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Bile has no enzymes, but bile salts emulsify fats.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. The yellow-green pigment in bile is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Bilirubin and biliverdin<br>B) Hemoglobin<br>C) Carotene<br>D) Urochrome<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Bile pigments are breakdown products of hemoglobin.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. Which enzyme activates trypsinogen to trypsin?<br><\/mark><\/strong>A) Pepsin<br>B) Enterokinase<br>C) Amylase<br>D) Lipase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Enterokinase (from intestinal mucosa) converts trypsinogen \u2192 trypsin.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. Pancreatic juice contains<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Amylase, lipase, trypsinogen<br>B) Pepsin, renin, amylase<br>C) Ptyalin, pepsin, lipase<br>D) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Pancreatic juice digests starch, fats, and proteins.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. Trypsin acts on<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Starch<br>B) Proteins<br>C) Lipids<br>D) Nucleic acids<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Trypsin breaks proteins into peptides.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Lipase acts on<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Carbohydrates<br>B) Proteins<br>C) Fats<br>D) Minerals<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Lipase hydrolyzes fats into fatty acids and glycerol.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. Amylase acts on<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Proteins<br>B) Fats<br>C) Starch<br>D) Minerals<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Amylase converts starch into maltose.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">42. Which enzyme digests nucleic acids?<\/mark><\/strong><br>A) Lipase<br>B) Nuclease (DNAse &amp; RNAse)<br>C) Trypsin<br>D) Amylase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Nucleases break nucleic acids into nucleotides.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. The enzyme maltase converts maltose into<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Glucose<br>B) Galactose<br>C) Fructose<br>D) Lactose<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Maltase splits maltose (disaccharide) into two glucose molecules.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">44. The enzyme lactase converts lactose into<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Glucose + Galactose<br>B) Glucose + Fructose<br>C) Glucose + Glucose<br>D) Sucrose<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Lactase breaks down milk sugar (lactose).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. The enzyme sucrase converts sucrose into<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Glucose + Galactose<br>B) Glucose + Fructose<br>C) Glucose + Glucose<br>D) Lactose<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Sucrase hydrolyzes cane sugar (sucrose).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. Which hormone stimulates pancreas to release digestive enzymes?<br><\/mark><\/strong>A) Gastrin<br>B) Secretin<br>C) Cholecystokinin (CCK)<br>D) Insulin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  CCK stimulates pancreatic enzyme secretion &#038; gall bladder contraction.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Which hormone stimulates pancreas to release bicarbonate-rich juice?<br><\/mark><\/strong>A) Gastrin<br>B) Secretin<br>C) Insulin<br>D) Renin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Secretin stimulates pancreatic bicarbonate to neutralize acidic chyme.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">48. Which enzyme is absent in gastric juice?<br><\/mark><\/strong>A) Pepsin<br>B) Lipase<br>C) Amylase<br>D) Renin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Gastric juice has no carbohydrate-digesting enzyme.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. Which enzyme breaks proteins into peptides in the stomach?<br><\/mark><\/strong>A) Trypsin<br>B) Pepsin<br>C) Lipase<br>D) Amylase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pepsin acts on proteins in acidic medium.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. Which digestive secretion emulsifies fats but contains no enzymes?<br><\/mark><\/strong>A) Saliva<br>B) Gastric juice<br>C) Bile<br>D) Pancreatic juice<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Bile salts emulsify fats into tiny droplets \u2192 easier digestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. End product of carbohydrate digestion is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Starch<br>B) Maltose<br>C) Glucose<br>D) Glycogen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Carbohydrates are broken down into glucose, which is absorbed in the small intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. End product of protein digestion is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Peptides<br>B) Amino acids<br>C) Polypeptides<br>D) Nucleotides<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Proteins \u2192 peptides \u2192 amino acids, absorbed into blood.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. End product of fat digestion is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Glycerol + fatty acids<br>B) Polypeptides<br>C) Glucose<br>D) Cholesterol<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Lipase breaks fats into glycerol + fatty acids.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. Carbohydrate digestion starts in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Stomach<br>B) Mouth<br>C) Small intestine<br>D) Large intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Salivary amylase begins starch digestion in mouth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. Protein digestion starts in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Mouth<br>B) Stomach<br>C) Small intestine<br>D) Large intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pepsin begins protein digestion in acidic stomach environment.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. Fat digestion starts in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Mouth<br>B) Stomach<br>C) Small intestine<br>D) Large intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Fat digestion starts in duodenum with bile salts + lipase.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. Main site of absorption of nutrients is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><\/strong><br>A) Stomach<br>B) Small intestine<br>C) Large intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Villi in small intestine absorb nutrients efficiently.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. Glucose and amino acids are absorbed into<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Lymph<br>B) Blood capillaries<br>C) Gall bladder<br>D) Pancreatic duct<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Glucose &#038; amino acids enter blood vessels of villi.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">59. Fatty acids and glycerol are absorbed into<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Blood<br>B) Lymph (lacteals)<br>C) Liver directly<br>D) Kidneys<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Fats enter lymphatic system as chylomicrons.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. Vitamins A, D, E, K are absorbed along with<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><\/strong><br>A) Proteins<br>B) Carbohydrates<br>C) Fats<br>D) Minerals<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Fat-soluble vitamins require dietary fat for absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. Water-soluble vitamins are absorbed in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Stomach<br>B) Large intestine<br>C) Small intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  B-complex &#038; Vitamin C absorbed in small intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. Minerals like calcium are absorbed in presence of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Vitamin A<br>B) Vitamin D<br>C) Vitamin K<br>D) Vitamin B12<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin D promotes calcium absorption in intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. Iron absorption is enhanced by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Vitamin C<br>B) Vitamin A<br>C) Vitamin B1<br>D) Vitamin K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Ascorbic acid reduces Fe\u00b3\u207a to Fe\u00b2\u207a, aiding absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. Which process moves food along alimentary canal?<br><\/mark><\/strong>A) Osmosis<br>B) Peristalsis<br>C) Active transport<br>D) Diffusion<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Peristalsis = rhythmic contractions of smooth muscles pushing food.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">65. Most water absorption occurs in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Stomach<br>B) Small intestine<br>C) Large intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Though large intestine also absorbs, most water is absorbed in small intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. Bile salts help in digestion of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Proteins<br>B) Fats<br>C) Carbohydrates<br>D) Nucleic acids<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Bile salts emulsify fats into small droplets for enzyme action.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. The brush border of villi contains enzymes for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Fat digestion<br>B) Carbohydrate and protein digestion<br>C) Water absorption only<br>D) Vitamin storage<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Brush border enzymes like maltase, lactase, peptidase complete digestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. Which sugar is absorbed by facilitated diffusion?<br><\/mark><\/strong>A) Glucose<br>B) Galactose<br>C) Fructose<br>D) Maltose<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Fructose absorption occurs via facilitated diffusion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. Glucose absorption in intestine occurs by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Passive diffusion<br>B) Active transport<br>C) Facilitated diffusion<br>D) Osmosis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Glucose is absorbed by sodium-linked active transport.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Amino acids absorption occurs mainly by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Passive diffusion<br>B) Active transport<br>C) Simple osmosis<br>D) Facilitated diffusion<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Amino acids use carrier proteins + energy for absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. Which nutrient is absorbed into lacteals of villi?<br><\/mark><\/strong>A) Glucose<br>B) Amino acids<br>C) Fatty acids &amp; glycerol<br>D) Minerals<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Fats \u2192 chylomicrons \u2192 lymphatic lacteals.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. Which part of intestine is most active in absorption?<br><\/mark><\/strong>A) Duodenum<br>B) Jejunum<br>C) Ileum<br>D) Cecum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jejunum is primary site for absorption of nutrients.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">73. Which part of small intestine absorbs bile salts &amp; Vitamin B12?<br><\/mark><\/strong>A) Duodenum<br>B) Jejunum<br>C) Ileum<br>D) Colon<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>   Ileum specifically absorbs bile salts and B12.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. In humans, most digestion of food takes place in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Stomach<br>B) Mouth<br>C) Small intestine<br>D) Large intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Enzymes from pancreas + bile + intestinal juice \u2192 major digestion in small intestine.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. In humans, most absorption of food occurs in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><\/strong><br>A) Stomach<br>B) Small intestine<br>C) Large intestine<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Villi &#038; microvilli \u2192 large surface area \u2192 maximum absorption.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. Inflammation of the appendix is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Hepatitis<br>B) Appendicitis<br>C) Gastritis<br>D) Colitis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Appendicitis = inflammation of vermiform appendix, may require surgery.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>77. Inflammation of the liver is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/strong><\/mark>A) Hepatitis<br>B) Gastritis<br>C) Pancreatitis<br>D) Colitis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Hepatitis is caused by viral infection, alcohol, or toxins.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. Yellowing of skin and eyes due to liver dysfunction is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Anemia<br>B) Jaundice<br>C) Rickets<br>D) Scurvy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jaundice occurs due to excess bilirubin in blood.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. Gallstones are formed due to precipitation of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Calcium<br>B) Cholesterol and bile pigments<br>C) Uric acid<br>D) Proteins<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gallstones block bile duct, causing pain and indigestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. The condition in which gastric acid enters esophagus is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Gastritis<br>B) Acid reflux \/ GERD<br>C) Ulcer<br>D) Hernia<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Gastro-esophageal reflux disease causes heartburn.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. Peptic ulcer is caused mainly due to infection by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) E. coli<br>B) Helicobacter pylori<br>C) Salmonella<br>D) Streptococcus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  H. pylori damages stomach lining \u2192 ulcer formation.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. Lack of which vitamin causes night blindness?<br><\/mark><\/strong>A) Vitamin A<br>B) Vitamin C<br>C) Vitamin D<br>D) Vitamin K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin A is important for vision in dim light.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. Deficiency of Vitamin D causes<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Rickets<br>B) Scurvy<br>C) Beriberi<br>D) Pellagra<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin D deficiency \u2192 weak bones, bowed legs in children.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. Deficiency of Vitamin C causes<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Pellagra<br>B) Scurvy<br>C) Beriberi<br>D) Rickets<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin C deficiency \u2192 bleeding gums, poor wound healing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. Lack of Vitamin K causes<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Excess bleeding<br>B) Weak bones<br>C) Night blindness<br>D) Skin disorders<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin K is essential for clotting factor synthesis.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>86. Which mineral is important for thyroid hormone synthesis?<br><\/strong><\/mark>A) Iron<br>B) Iodine<br>C) Calcium<br>D) Sodium<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Iodine deficiency \u2192 goiter (thyroid enlargement).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">87. Which mineral is essential for hemoglobin formation?<br><\/mark><\/strong>A) Iodine<br>B) Calcium<br>C) Iron<br>D) Phosphorus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>   Iron is a component of hemoglobin that binds oxygen.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. Which mineral strengthens bones and teeth?<br><\/mark><\/strong>A) Sodium<br>B) Potassium<br>C) Calcium<br>D) Zinc<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>   Calcium + phosphorus form hydroxyapatite crystals in bones\/teeth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. Kwashiorkor is caused due to deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Carbohydrates<br>B) Proteins<br>C) Fats<br>D) Vitamins<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Protein deficiency \u2192 swollen belly, edema, stunted growth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. Marasmus is caused due to deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Proteins only<br>B) Energy (proteins + calories)<br>C) Fats only<br>D) Vitamins only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Severe malnutrition \u2192 muscle wasting, weakness.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>91. Which disease is associated with deficiency of Vitamin B1 (Thiamine)?<br><\/strong><\/mark>A) Pellagra<br>B) Beriberi<br>C) Rickets<br>D) Scurvy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  B1 deficiency \u2192 nervous system and heart problems.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. Pellagra is caused by deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><\/strong><br>A) Vitamin B2<br>B) Vitamin B3 (Niacin)<br>C) Vitamin B6<br>D) Vitamin B12<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Niacin deficiency \u2192 3 Ds: dermatitis, diarrhea, dementia.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">93. Deficiency of Vitamin B12 causes<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><\/mark><\/strong><br>A) Pernicious anemia<br>B) Rickets<br>C) Scurvy<br>D) Night blindness<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Lack of B12 \u2192 improper RBC maturation \u2192 anemia.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><br><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">94. Which part of digestive system is most commonly affected in typhoid?<br><\/mark><\/strong>A) Large intestine<br>B) Small intestine (ileum)<br>C) Stomach<br>D) Rectum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Typhoid (Salmonella typhi) affects ileum.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. Goiter is caused by deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Iron<br>B) Calcium<br>C) Iodine<br>D) Phosphorus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Iodine deficiency \u2192 thyroid enlargement.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. Which organ secretes intrinsic factor required for Vitamin B12 absorption?<br><\/mark><\/strong>A) Liver<br>B) Stomach<br>C) Pancreas<br>D) Intestine<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Parietal cells secrete intrinsic factor for B12 absorption in ileum.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">97. Xerophthalmia (dryness of eyes) is caused by deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Vitamin C<br>B) Vitamin A<br>C) Vitamin D<br>D) Vitamin K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin A deficiency affects epithelial tissues and eyes.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. Rickets in children and osteomalacia in adults are due to deficiency of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Vitamin A<br>B) Vitamin B1<br>C) Vitamin D<br>D) Vitamin K<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Vitamin D deficiency causes soft bones in both children and adults.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. The enzyme deficiency causing lactose intolerance is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_______________.<\/mark><\/strong><br><\/mark><\/strong>A) Maltase<br>B) Sucrase<br>C) Lactase<br>D) Amylase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Lactase deficiency \u2192 inability to digest lactose in milk.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">100. Which one is not a digestive disorder?<br><\/mark><\/strong>A) Appendicitis<br>B) Gastritis<br>C) Hypertension<br>D) Peptic ulcer<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Hypertension is circulatory, not digestive disorder.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The human digestive system starts with _______________.A) EsophagusB) MouthC) StomachD) Small intestine Show Answer Answer: B Explanation: Digestion begins in the mouth with chewing and salivary enzymes. 2. The longest part of the human digestive system is_______________.A) EsophagusB) StomachC) Small intestineD) Large intestine Show Answer Answer: C Explanation: Small intestine (~6 m) is longest,<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[16245,16151,16133,16155,16154,16147,16158,16139,16135,16253,16254,16241,16248,16252,16251,16256,16250,16240,16242,10987,16247,16244,4029,16156,5649,5623,16249,16238,16255,16134,16243,16246,16132,16239,16140],"class_list":{"0":"post-12864","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-biology","7":"tag-absorption-of-nutrients","8":"tag-biology-learning","9":"tag-biology-mcqs","10":"tag-biology-preparation-material","11":"tag-biology-questions-and-answers","12":"tag-biology-quiz","13":"tag-biology-revision","14":"tag-biology-study-material","15":"tag-competitive-exam-biology","16":"tag-digestion-of-carbohydrates","17":"tag-digestion-of-fats","18":"tag-digestion-of-proteins","19":"tag-digestion-process","20":"tag-digestive-disorders","21":"tag-digestive-organs","22":"tag-enzymes-in-digestion","23":"tag-esophagus","24":"tag-gall-bladder","25":"tag-human-digestive-system","26":"tag-human-digestive-system-top-100-mcqs-with-answer-and-explanation","27":"tag-large-intestine","28":"tag-liver","29":"tag-mcqs-adda","30":"tag-mcqs-for-biology-exam","31":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","32":"tag-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","33":"tag-mouth-and-teeth","34":"tag-nutrition","35":"tag-pancreas","36":"tag-psc-biology-mcqs","37":"tag-salivary-glands","38":"tag-small-intestine","39":"tag-ssc-biology-mcqs","40":"tag-stomach","41":"tag-upsc-biology-mcqs"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=12864"}],"version-history":[{"count":105,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12864\/revisions"}],"predecessor-version":[{"id":35912,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12864\/revisions\/35912"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=12864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=12864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=12864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}