This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 16 Digestion And Absorption – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 16 Digestion And Absorption Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the enyzme secreted by serous cells of the stomach for protein digestion? A) Pro-amylase. B) Trypsinogen. C) Pro-lipase. D) Pepsinogen. Show Answer Correct Answer: D) Pepsinogen. 2. Enterokinase is secreted by A) Intestinal glands. B) Pancreatic duct. C) Liver. D) Salivary gland. Show Answer Correct Answer: A) Intestinal glands. 3. Breast feeding of an infant less than a year old, is replaced by food deficient in proteins and calories. The child suffers from A) Rickets. B) Kwashiorkor. C) Marasmus. D) Scurvy. Show Answer Correct Answer: C) Marasmus. 4. The juice having maltase, dipeptidase, lipase, nucleotidase, nucleosidase etc is called:- A) Gastric juice. B) Bile. C) Pancreatic juice. D) Intestinal juice / Succus entericus. Show Answer Correct Answer: D) Intestinal juice / Succus entericus. 5. Which of the following food substances is/are absorbed directly without digestion?(1) vitamin C(2) sucrose(3) polypeptide A) Only. B) Only. C) And (3) only. D) And (3) only. Show Answer Correct Answer: A) Only. 6. The innermost layer of human gut forms irregular folds which are known as A) Iumen. B) Villi. C) Rugae. D) Both (b) and (c). Show Answer Correct Answer: D) Both (b) and (c). 7. Dental Formula of Monophyodont teeth- A) 21232123. B) 21222122. C) 21022102. D) 00210021. Show Answer Correct Answer: D) 00210021. 8. Caecum is small blind sac which hosts some symbiotic micro-organisms. From it a small finger like vestigeal organ arises. This organ is called- A) Parotid gland. B) Vermis. C) Vermiform appendix. D) Lacteals. Show Answer Correct Answer: C) Vermiform appendix. 9. Which of the following answers correctly sequences the pathway food takes from the beginning to end? A) Mouth, esophagus, stomach, small intestine, large intestine. B) Mouth, esophagus, stomach, large intestine, small intestine. C) Mouth, stomach, esophagus, small intestine, large intestine. D) Mouth, stomach, esophagus, large intestine, small intestine. Show Answer Correct Answer: A) Mouth, esophagus, stomach, small intestine, large intestine. 10. Fatty acids cross the cell surface membrane of an epithelial cell in the ileum because A) They are small. B) They are attached to micelles. C) They are polar. D) They are lipid soluble. Show Answer Correct Answer: D) They are lipid soluble. 11. Which one of the following pairs of food components in humans reaches the stomach totally undigested? A) Protein and starch. B) Starch and fat. C) Fat and cellulose. D) Starch and cellulose. Show Answer Correct Answer: C) Fat and cellulose. 12. In human beings which of the following opens into the duodenum- A) Hepatic duct and pancreatic duct separately. B) Hepato-pancreatic duct. C) 1$_{st}$ hepatic duct, then pancreatic duct. D) 1$_{s}$t pancreatic duct then hepatic duct. Show Answer Correct Answer: B) Hepato-pancreatic duct. 13. Which structure prevent the entry of food in trachea A) Epiglottis. B) Cardiac sphincter. C) Glottis. D) Oesophagus. Show Answer Correct Answer: A) Epiglottis. 14. Which of the following helps digest starch in the mouth ..... A) Salivary amylase. B) Lysozymes. C) Bolus. D) Mucin. Show Answer Correct Answer: A) Salivary amylase. 15. Function of gall bladder is- A) Secretion of bile. B) Formation of bile salts. C) Formation of digestive enzyme. D) Storage of bile. Show Answer Correct Answer: D) Storage of bile. 16. What is the product of digestion by amylase? A) Glucose. B) Sucrose. C) Fructose. D) Maltose. Show Answer Correct Answer: D) Maltose. 17. Which is the element that hardens the tooth enamel? A) Iodine. B) Sodium. C) Fluorine. D) Calcium. Show Answer Correct Answer: C) Fluorine. 18. Which of the following is the correct order for the major parts of the gastrointestinal tract? A) Oesophagus, stomach, large intestine, small intestine, mouth. B) Mouth, stomach, oesophagus, large intestine, small intestine. C) Mouth, small intestine, stomach, oesophagus, large intestine. D) Mouth, oesophagus, stomach, small intestine, large intestine. Show Answer Correct Answer: D) Mouth, oesophagus, stomach, small intestine, large intestine. 19. What is the process of wave-like muscle contractions that moves food through the digestive tract? A) Pericoronitis. B) Peristalsis. C) Pericardium. D) Pepsin. Show Answer Correct Answer: B) Peristalsis. 20. The organ which absorbs water A) Small intestine. B) Stomach. C) Villi. D) Large intestine. Show Answer Correct Answer: D) Large intestine. 21. What happens to long chain fatty acids and monoglycerides inside ileum epithelial cells? A) They are broken down to fatty acids and glycerol. B) They form triglycerides. C) They are destroyed by lysosomes. D) Nothing. Show Answer Correct Answer: B) They form triglycerides. 22. Hepatocytes secrete- A) Bile, no digestive enzymes. B) Bile with digestive enzymes. C) Lipase. D) Amylopsin. Show Answer Correct Answer: A) Bile, no digestive enzymes. 23. Match the following (1) Saliva mixed with food is called (p) Chyme(2) food mixed with acidic gastric juice (q) Chyle (3) alkaline food in stomach (r) Bolus A) 1. (r) 2. (p) 3. (q). B) 1. (r) 2. (q) 3. (p). C) 1. (p) 2. (q) 3. (r). D) 1. (q) 2. (r) 3. (p). Show Answer Correct Answer: A) 1. (r) 2. (p) 3. (q). 24. Mucosa forms irregular folds (rugae) in the- A) Colon. B) Ileum. C) Jejunum. D) Stomach. Show Answer Correct Answer: D) Stomach. 25. Tiny finger-shaped structures in the small intestine in which absorption occurs A) Villi. B) Bile. C) Rectum. D) Anus. Show Answer Correct Answer: A) Villi. 26. As digested lipids are absorbed by the lymphatics of the small intestine, they become milky. What are these lipoprotein droplets called? A) Chyme. B) Chyle. C) Chylomicron. D) Micelles. Show Answer Correct Answer: C) Chylomicron. 27. Gastric juice does not contain A) Protease. B) Amylase. C) Renin. D) Lipase. Show Answer Correct Answer: B) Amylase. 28. Read the following statements and choose the correct option. I. Digestion involves chemical processes only. ll. Mastication of food is facilitated by saliva. A) Statement I is correct, but Il is incorrect. B) Statement I is incorrect, but II is correct. C) Both statements I and Il are correct. D) Both statements I and II are incorrect. Show Answer Correct Answer: B) Statement I is incorrect, but II is correct. 29. What is function of Kupffer's cells? A) Digestion of proteins. B) Phagocytosis. C) Bile secretion. D) Store glycogen. Show Answer Correct Answer: B) Phagocytosis. 30. Pancreas produces- A) (a) three digestive enzymes and one hormone. B) B) three digestive enzymes and two hormones. C) (c) two digestive enzymes and one hormone. D) (d) three digestive enzymes and no holmone. Show Answer Correct Answer: B) B) three digestive enzymes and two hormones. 31. The small intestine is responsible for ..... A) Filtering. B) Evacuation. C) Water absorption. D) Nutrient absorption. Show Answer Correct Answer: D) Nutrient absorption. 32. What does "GERD" stand for? A) Gastroesophageal reflux disease. B) General esophageal reflux disease. C) General emergency response disorder. D) Gastrointestinal reflux disorder. Show Answer Correct Answer: A) Gastroesophageal reflux disease. 33. The hardest substance in vertebrate body is A) Enamel. B) Keratin. C) Chondrin. D) Dentine. Show Answer Correct Answer: A) Enamel. 34. Where do certain symbiotic microorganisms normally occur in the human body?(Mains 2012) A) Duodenum. B) Tongue surface and oral lining. C) Rectum and vermiform appendix. D) Caecum. Show Answer Correct Answer: D) Caecum. 35. The layer of cells that secrete enamel of tooth is A) Dentoblast. B) Ameloblast. C) Osteoblast. D) Odontoblast. Show Answer Correct Answer: B) Ameloblast. 36. The protective substance that lines the stomach is called A) Mucus. B) Saliva. C) Pepsin. D) Trypsin. Show Answer Correct Answer: A) Mucus. 37. The end products of carbohydrate digestion are? (a) (b)(c) (d) A) Galactose, glucose, Fructose. B) Sucrose, galactose, maltose. C) Galactose, glucose, maltose. D) None of these. Show Answer Correct Answer: A) Galactose, glucose, Fructose. 38. What is the term given to a ball-like mixture of food and saliva that forms in the mouth? A) Mucus. B) Epiglottis. C) Bolus. D) Peristalsis. Show Answer Correct Answer: C) Bolus. 39. Protein is broken down into ..... before they are asborbed into the small intestines. A) Citric acid. B) Hydrochiloric. C) Fatty acids. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 40. Which of the following components of our food are taken in small quantities? A) Carbohydrate and proteins. B) Proteins and minerals. C) Proteins and lipids. D) Minerals and vitamins. Show Answer Correct Answer: D) Minerals and vitamins. 41. Hydrochloric acid is secreted in the ..... A) Oesophagus. B) Stomach. C) Large intestine. D) Small intestine. Show Answer Correct Answer: B) Stomach. 42. Consider the following statements and choose the correct option. I. Enamel helps in the mastication of food. II. It is the hardest part of human body. A) Statement I is correct, but ll is incorrect. B) Statement I is incorrect, but ll is correct. C) Both statements I and II are correct. D) Both statements I and II are incorrect. Show Answer Correct Answer: C) Both statements I and II are correct. 43. What organ is responsible for the absorption of water and movement of waste? A) Large intestine. B) Small intestine. C) Stomach. D) Oral cavity. Show Answer Correct Answer: A) Large intestine. 44. How does the stomach prepare dietary proteins for further digestion? A) The stomach uses mechanical digestion to break down proteins into smaller pieces. B) Stomach acid activates pepsinogen to pepsin, which begins protein digestion. C) Proteins are absorbed directly into the bloodstream from the stomach. D) The stomach neutralizes proteins before they enter the intestines. Show Answer Correct Answer: B) Stomach acid activates pepsinogen to pepsin, which begins protein digestion. 45. ..... ion is required for normal functioning of Salivary Amylase . A) Cl $^{-}$. B) HCO$_{3}$$^{-}$. C) K$^{+}$. D) Thiocynate ion. Show Answer Correct Answer: A) Cl $^{-}$. 46. Which of the following is the reason why herbivorous animals can digest cellulose? A) Their molar and premolar teeth can crush and grind the food. B) Bacteria present in their caecum help in the digestion of cellulose. C) Gastric juice has a digestive enzyme for cellulose digestion. D) Alimentary canal is very long. Show Answer Correct Answer: B) Bacteria present in their caecum help in the digestion of cellulose. 47. Moves food from the mouth to the stomach A) Esophagus. B) Small intestine. C) Large intestine. D) Pancreas. Show Answer Correct Answer: A) Esophagus. 48. Endopeptidase and exopeptidase enzymes digest protein faster together than either on their own. What is the main reason for this? A) Endopeptidases provide more substrate for exopeptidases. B) Endopeptidases activate exopeptidases. C) Their active sites have the same charge. D) They have the same optimal pH. Show Answer Correct Answer: A) Endopeptidases provide more substrate for exopeptidases. 49. Which statement about absorption from the gastro-intestinal (GI) tract is most correct? A) The absorption of glucose is associated with sodium uptake. B) Fructose is absorbed more rapidly than glucose. C) Galactose and fructose are absorbed by the same transporter at the brush border membrane. D) Most water absorption along the GI tract occurs in the colon. Show Answer Correct Answer: A) The absorption of glucose is associated with sodium uptake. 50. Amino acids are linked together chemically to form molecules of A) Simple Carbohydrates. B) Complex Carbohydrates. C) Really Complex Carbohydrates. D) Proteins. Show Answer Correct Answer: D) Proteins. 51. Assertion:Cholagogues are substance that cause contraction of gallbladder Reason:These substances cause the release of CCK-PZ from the duodenum A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion. B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion. C) If Assertion is true but Reason is false. D) If both Assertion and Reason are false. Show Answer Correct Answer: A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion. 52. Where does the digestion of proteins take place? A) Mouth and stomach. B) Stomach and small intestine. C) Mouth and small intestine. D) Mouth, stomach and small intestine. Show Answer Correct Answer: B) Stomach and small intestine. 53. If a patient is advised to take more meat, butter milk and eggs in his diet. The person is A) Suffering from Kwashiorkor disease. B) Suffering from rickets. C) Cannot see in the dark. D) Suffering from scurry. Show Answer Correct Answer: A) Suffering from Kwashiorkor disease. 54. Which of the following functions is not performed by secretions from salivary glands? A) Control bacterial population in mouth. B) Lubrication of oral cavity. C) Digestion of disaccharides. D) Digestion of complex carbohydrates. Show Answer Correct Answer: C) Digestion of disaccharides. 55. Egestion refers to the A) Movement of food from the stomach to the large intestine. B) Elimination of enzymes in the gut. C) Removal of undigested food. D) Absorption of water in the large intestine. Show Answer Correct Answer: C) Removal of undigested food. 56. The process by which nutrient molecules pass through the wall of your digestive system into your blood. A) Peristalsis. B) Digestion. C) Absorption. D) Villi. Show Answer Correct Answer: C) Absorption. 57. The many projections on the wall of small intestine function to- A) Hold products of digestion so they do not enter the large intestine. B) Increase the surface area. C) Hold mucus, so ulcers do not form. D) Secrete digestion enzymes. Show Answer Correct Answer: B) Increase the surface area. 58. Goblet cells of alimentary canal are modified from- A) Osteocytes. B) Squamous epithelial cells. C) Columnar epithelial cells. D) Compound epithelial cells. Show Answer Correct Answer: C) Columnar epithelial cells. 59. Which of the following is/are true of dextrinase?I. It converts glucose to dextrinsII. It can break alpha 1, 6 glycosidic bondsIII. It is secreted by the pancreas A) II only. B) I and II only. C) II and III only. D) I, II and III. Show Answer Correct Answer: C) II and III only. 60. Assertion (A)-In human gut, small intestine is the longest part of digestive system. Reason (R)-Different types of food like proteins, fats and carbohydrates are digested completely in this longest part of human alimentary canal . A) (a) Both A and R are true and R is the correct explanation of A. B) B) Both A and R are true, but R is not the correct explanation of A. C) (c) A is true, but R is false. D) (d) Both A and R are false. Show Answer Correct Answer: A) (a) Both A and R are true and R is the correct explanation of A. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 16 Digestion And Absorption Quiz 1Class 11 Biology Chapter 16 Digestion And Absorption Quiz 2Class 11 Biology Chapter 16 Digestion And Absorption Quiz 4Class 11 Biology Chapter 16 Digestion And Absorption Quiz 5Class 11 Biology Chapter 1 The Living World QuizClass 11 Biology Chapter 10 Cell Cycle And Cell Division QuizClass 11 Biology Chapter 11 Transport In Plants QuizClass 11 Biology Chapter 12 Mineral Nutrition Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books