This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 16 Digestion And Absorption – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 16 Digestion And Absorption Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the primary function of digestion? A) To convert insoluble molecules into soluble ones for absorption. B) To store food within the body. C) To increase the size of food particles. D) To transport nutrients directly into the bloodstream. Show Answer Correct Answer: A) To convert insoluble molecules into soluble ones for absorption. 2. Waves of contractions that move food one way through the digestive system are called A) Peristalsis. B) Metabolism. C) Impulse. D) Action Potential. Show Answer Correct Answer: A) Peristalsis. 3. What is the optimum pH for pepsin activity? A) 5. B) 1.6-2.5. C) 7-8. D) 1-2. Show Answer Correct Answer: B) 1.6-2.5. 4. Which of the following is not included in Hepatic portal traid? A) Branch of Hepatic artery. B) Branch of Hepatic vein. C) Branch of bile duct. D) Branch of Hepatic portal vein. Show Answer Correct Answer: B) Branch of Hepatic vein. 5. Which of the following is not the function of large intestine? A) Absorption of some water, minerals and certain drugs. B) Nutrient absorption. C) Secretion of mucus to lubricate faeces. D) Temporary storage of faeces in rectum. Show Answer Correct Answer: B) Nutrient absorption. 6. Pepsin and Trypsin are BOTH examples of? A) Exopeptidases. B) Peptidases. C) Dipeptidases. D) Endopeptidases. Show Answer Correct Answer: B) Peptidases. 7. Mark the correct statement with reference to human digestive system. A) Serosa is the innermost layer of the alimentary canal. B) Lleum opens into small intestine. C) Brunner's gland is present in submucosa of ileum. D) Vermiform appendix arises from caecum. Show Answer Correct Answer: D) Vermiform appendix arises from caecum. 8. HUMAN DENTAL FORMULA:- A) 2132/2123. B) 2312/2312. C) 2123/2123. D) 2321/2123. E) NONE of these. Show Answer Correct Answer: C) 2123/2123. 9. The liver is said to be a digestive gland because it A) Converts stored glycogen into glucose. B) Breaks down excess amino acids. C) Stores iron. D) Produces bile. Show Answer Correct Answer: D) Produces bile. 10. Which of these is not a type of amylase? A) Ileal amylase. B) Salivary amylase. C) Pancreatic amylase. D) None of the above. Show Answer Correct Answer: A) Ileal amylase. 11. Which type of enzyme hydrolyses peptide bonds in the middle of a polypeptide chain A) Amylase. B) Exopeptidase. C) Dipeptidase. D) Endopeptidase. Show Answer Correct Answer: D) Endopeptidase. 12. Mia is studying the absorption of dietary proteins under normal circumstances in the small intestine. Can you explain how this process works? A) Dietary proteins are absorbed as amino acids and small peptides in the small intestine. B) Dietary proteins are absorbed as carbohydrates in the small intestine. C) Proteins are fully digested and absorbed in the stomach. D) Amino acids are excreted without absorption in the small intestine. Show Answer Correct Answer: A) Dietary proteins are absorbed as amino acids and small peptides in the small intestine. 13. Which of the following is incorrect about pancreas? A) It is compound gland as it has both exocrine and endocrine part. B) Exocrine part secretes alkaline pancreatic juice having enzymes. C) Endocrine part secretes hormones like insulin and glucagon. D) It is surrounded by Glisson's capsule. Show Answer Correct Answer: D) It is surrounded by Glisson's capsule. 14. Hepatopancreatic duct opens in A) Liver. B) Pancreas. C) Duodenum. D) Stomach. Show Answer Correct Answer: C) Duodenum. 15. A:Human has diphyodont dentition R:Human has four types of teeth-incisor, canine, premolars and molars. 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: B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion. 16. A dental disease characterized by mottling of teeth is due to the presence of certain chemical element in drinking water. Which of the following is that element? A) Calcium. B) Iron. C) Boron. D) Fluorine. Show Answer Correct Answer: D) Fluorine. 17. Given below are two statements:Statement I:Fatty acids and glycerols cannot be absorbed into the blood. Statement II:Specialized lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately into the blood. A) Both Statement I and Statement II are correct. B) Both Statement I and Statement II are incorrect. C) Statement I is correct but Statement II is incorrect. D) Statement I is incorrect but Statement II is correct. Show Answer Correct Answer: A) Both Statement I and Statement II are correct. 18. Which statement about the stomach is not correct? A) It is located in the upper left abdominal cavity. B) It has three major parts-fundus, cardiac, pyloric. C) Fundus part opens into the first part of small intestine. D) Gastro-oesophageal sphincter regulates opening of oesophagus into stomach. Show Answer Correct Answer: C) Fundus part opens into the first part of small intestine. 19. How many salivary glands are present inside the buccal cavity A) 6. B) 1. C) 3. D) 0. Show Answer Correct Answer: D) 0. 20. An upset in the balance of microbiota in the GI tract can cause diseases and disorders such as: A) Diabetes. B) Obesity. C) Neuropathy. D) None of the above. Show Answer Correct Answer: B) Obesity. 21. Where is Brunner's gland located? A) Mucosa of ileum. B) Submucosa of duodenum. C) Submucosa of stomach. D) Mucosa of oesophagus. Show Answer Correct Answer: B) Submucosa of duodenum. 22. Which statement is correct with reference to chylomicron A) They are the end products of fat digestion. B) The reconstructed triglycerides in the intestinal cells combine with phospholipids and cholesterol and are released into the lymph in the form of the protein-coated fat droplets called chylomicron. C) This is the form which digested fats arr absorbed into intestinal cells. D) Here are short chains of fatty acids absorbed directly into blood by diffusion. Show Answer Correct Answer: B) The reconstructed triglycerides in the intestinal cells combine with phospholipids and cholesterol and are released into the lymph in the form of the protein-coated fat droplets called chylomicron. 23. What is the aim of the digestion? A) Obtain matter and energy. B) Obtain nutrients from food and break it down into small molecules, which are then absorbed. C) Break down food into inorganic nutrients. D) Obtain nutrients form food and transport it to the cells. Show Answer Correct Answer: B) Obtain nutrients from food and break it down into small molecules, which are then absorbed. 24. Bile juice helps in the digestion of fat because it contains A) Vitamins. B) Bile pigments. C) Bile salts. D) Enzymes. Show Answer Correct Answer: C) Bile salts. 25. Dental formula of adult person is- A) $\frac{2123}{2123}$. B) $\frac{2123}{2124}$. C) $\frac{2122}{2122}$. D) $\frac{2114}{2114}$. Show Answer Correct Answer: A) $\frac{2123}{2123}$. 26. What is the function of the large intestine? A) The absorption of water and some vitamins, formation and storage of faeces. B) The absorption of nutrients. C) The digestion of fats. D) Transport the nutrients to the blood stream. Show Answer Correct Answer: A) The absorption of water and some vitamins, formation and storage of faeces. 27. Saliva contains this enzyme to start the digestive process. A) Spit. B) Amylase. C) Hydrochloric acid. D) Sodium bicarbonate. Show Answer Correct Answer: B) Amylase. 28. Which of the following tissues lines the kidney ducts? A) Smooth muscle. B) Adipose. C) Nervous. D) Epithelial. Show Answer Correct Answer: D) Epithelial. 29. Rhythmic muscular contractions that move food along the GI tract A) Heterotrophs. B) Alimentary canal. C) Peristalsis. D) Nutrients. Show Answer Correct Answer: C) Peristalsis. 30. Which enzyme hydrolyzes the $\alpha$-1, 6 glycosidic linkage in the $\alpha$-limit dextrins? A) Isomaltase. B) Amylase. C) Lactase. D) Sucrase. Show Answer Correct Answer: A) Isomaltase. 31. Which are the three juices released in the duodenum (small intestine)? A) Bile, pancreatic juice and gastric juice. B) Bile, pancreatic juice and intestinal juice. C) Bile, gastric juice and saliva. D) Bile, intestinal juice and pancratic juice. Show Answer Correct Answer: D) Bile, intestinal juice and pancratic juice. 32. Functional unit of absorption of digested food are A) Peyers patches. B) Villi. C) Crypts of Leiberkuhn. D) Brunners gland. Show Answer Correct Answer: B) Villi. 33. A vitamin that is not stored in the liver is vitamin: A) C. B) A. C) B$_{12}$. D) K. Show Answer Correct Answer: A) C. 34. Which is NOT a digestive enzyme? A) Hydrochloric acid. B) Amylase. C) Alcohol. D) Bile. Show Answer Correct Answer: C) Alcohol. 35. Where does the digestion of carbohydrates take place? A) Mouth. B) Mouth and Stomach. C) Mouth and small Intestine. D) Mouth and large intestine. E) Stomach. Show Answer Correct Answer: C) Mouth and small Intestine. 36. The enzyme that is not present in succus entericus is A) Lipase. B) Nuclease. C) Maltase. D) Nucleosidase. Show Answer Correct Answer: B) Nuclease. 37. The secretion of the brush border cells along with secretions of goblet cells present in the mucosa of small intestine constitutes:- A) Chyme. B) Chyle. C) Gastric juice. D) Succus entericus. Show Answer Correct Answer: D) Succus entericus. 38. Which of the following organs has 3 parts (ascending, transverse and descending parts)- A) Colon. B) Caecum. C) Small intestine. D) Large intestine. Show Answer Correct Answer: A) Colon. 39. IN WHICH PART TONGUEBITTER TASTE IS PERCEIVED? A) Doral of front side. B) Basal side of tongue. C) Back side of tongue. D) Part of side where salivary is release. Show Answer Correct Answer: C) Back side of tongue. 40. The enzyme which does not directly act upon the food substance in the small intestine of man is A) Lipase. B) Enterokinase. C) Trypsin. D) Amylopsin. Show Answer Correct Answer: D) Amylopsin. 41. What is metabolism in biologyMeaning? A) Only breakdown of foods into simple substance. B) Simple substance into complex substance. C) Person Having a mental problems. D) Breakdown of food into simple substance and and simple to complex substance. Show Answer Correct Answer: D) Breakdown of food into simple substance and and simple to complex substance. 42. After eating a hamburger, chemical digestion begins in the A) Mouth cavity. B) Oesophagus. C) Stomach. D) Small intestine. Show Answer Correct Answer: A) Mouth cavity. 43. What is starch broken down by? A) Carboxylase. B) Amylase. C) Peptidase. D) Starchase. Show Answer Correct Answer: B) Amylase. 44. The enzyme enterokinase helps in conversion of A) Pepsinogen into pepsin. B) Proteins into polypeptides. C) Trypsinogen into trypsin. D) Caseinogen into casein. Show Answer Correct Answer: C) Trypsinogen into trypsin. 45. About 30% starch is digestied in:- A) Oral cavity. B) Stomach. C) Small intestine. D) Colon. Show Answer Correct Answer: A) Oral cavity. 46. Digestive enzymes are- A) Hydrolases. B) Oxidoreductases. C) Transferases. D) None ofthese. Show Answer Correct Answer: A) Hydrolases. 47. The stomach wall produces mucus to cover its surface. Which of the following statements correctly describe(s) the function of the mucus?(1) It kills the bacteria in the ingested food.(2) It prevents the rubbing of food against the stomach wall.(3) It protects the stomach wall from the action of the digestive enzymes. A) Only. B) Only. C) And (2) only. D) And (3) only. Show Answer Correct Answer: D) And (3) only. 48. Trypsinogen is activated to trypsin by? A) Hcl. B) Enterokinase. C) Lipase. D) Trypsin itself. Show Answer Correct Answer: B) Enterokinase. 49. The aggregation of lymphatic tissue particularly located in the ileum of small intestine are known as- A) Choroid plexus. B) Peyer's patches. C) Plica circulares. D) Microvilli. Show Answer Correct Answer: B) Peyer's patches. 50. Involuntary muscles are not found in A) Iris. B) Heart. C) Bronchi of the lungs. D) Tongue. Show Answer Correct Answer: D) Tongue. 51. Bile is produced by- A) Gall bladder. B) Liver. C) Hepatic duct. D) Blood. Show Answer Correct Answer: B) Liver. 52. Which of these helps prevent constipation? A) Protein. B) Fiber. C) Sugar. D) Fat. Show Answer Correct Answer: B) Fiber. 53. Zymogen cells of gastric glands produce: A) Pepsinogen. B) Chymotrypsin. C) Pepsin. D) Trypsinogen. Show Answer Correct Answer: A) Pepsinogen. 54. Which of the following is not a component of a micelle? A) Fatty acids. B) Lipases. C) Monoglycerides. D) Bile salts. Show Answer Correct Answer: B) Lipases. 55. What is common among amylase, rennin and trypsin? A) These are produced in stomach. B) These act at a pH lower than 7. C) These all are proteins. D) These all are proteolytic enzymes. Show Answer Correct Answer: C) These all are proteins. 56. Where does the digestion of lipids take place? A) Stomach. B) Stomach and small intestine. C) Small intestine. D) Mouth, stomach and small intestine. E) Mouth and small intestine. Show Answer Correct Answer: C) Small intestine. 57. In terms of the visking tubing, what is a semi-permeable membrane? A) A membrane that allows anything to pass through it. B) A membrane that allows large molecules to pass through it. C) A membrane that allows small molecules to pass through it. D) A membrane that does nothing. Show Answer Correct Answer: C) A membrane that allows small molecules to pass through it. 58. Go Through the following statements:(I) All Monophyodont teeth are permanenent teeth.(II) All permanent teeth are Diphyodont(III) Diphyodont teeth have milk teeth, Chhose the correct statements. A) I an II only. B) II and III only. C) I and III only. D) All are correct. Show Answer Correct Answer: C) I and III only. 59. Which of these increase does not allow the ileum to be adapted for absorption A) Large surface area. B) Richly supplied with blood capillaries and lymphatic capillaries. C) Ileum is one cell thick. D) Long. Show Answer Correct Answer: C) Ileum is one cell thick. 60. What does "N/V" stand for in medical terms? A) Nausea and vomiting. B) Nutrition and vitamins. C) Nerve and vein. D) Night vision. Show Answer Correct Answer: A) Nausea and vomiting. 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