This quiz works best with JavaScript enabled. Home > Class 11 > 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 (25 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 increase the size of food particles. C) To store food within the body. 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) Impulse. B) Peristalsis. C) Action Potential. D) Metabolism. Show Answer Correct Answer: B) Peristalsis. 3. What is the optimum pH for pepsin activity? A) 1-2. B) 1.6-2.5. C) 5. D) 7-8. 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 portal vein. C) Branch of Hepatic vein. D) Branch of bile duct. Show Answer Correct Answer: C) 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. Liver is? A) Gland. B) Gland/skin. C) Gland/organ. D) Gland/vein. Show Answer Correct Answer: C) Gland/organ. 7. Haustra are- A) The site where vermiform appendix is found. B) Surface extensions in rectum. C) Surface extensions in rectum. D) Small pouches in colon. Show Answer Correct Answer: D) Small pouches in colon. 8. Pepsin and Trypsin are BOTH examples of? A) Peptidases. B) Endopeptidases. C) Exopeptidases. D) Dipeptidases. Show Answer Correct Answer: A) Peptidases. 9. 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. 10. 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. 11. The liver is said to be a digestive gland because it A) Converts stored glycogen into glucose. B) Breaks down excess amino acids. C) Produces bile. D) Stores iron. Show Answer Correct Answer: C) Produces bile. 12. 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. 13. Which type of enzyme hydrolyses peptide bonds in the middle of a polypeptide chain A) Exopeptidase. B) Endopeptidase. C) Amylase. D) Dipeptidase. Show Answer Correct Answer: B) Endopeptidase. 14. 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. 15. 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. 16. Hepatopancreatic duct opens in A) Duodenum. B) Stomach. C) Liver. D) Pancreas. Show Answer Correct Answer: A) Duodenum. 17. 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. 18. 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) Boron. B) Fluorine. C) Iron. D) Calcium. Show Answer Correct Answer: B) Fluorine. 19. 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. 20. 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. 21. A child took sugarcane and sucked its juice. Regarding this which of the following match is correct in the order of-Substrate > Enzyme > Site of secretion of enzyme > products formed? A) Proteins > Pepsin > Duodenum > polypeptides. B) Starch > Amylase > Salivary glands > Glucose. C) Lipids > Lipase>Pancreas > Fat globules. D) Sucrose > Invertase > Duodenum > Glucose + Fructose. Show Answer Correct Answer: D) Sucrose > Invertase > Duodenum > Glucose + Fructose. 22. How many salivary glands are present inside the buccal cavity A) 1. B) 3. C) 0. D) 6. Show Answer Correct Answer: C) 0. 23. 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. 24. Where is Brunner's gland located? A) Submucosa of duodenum. B) Submucosa of stomach. C) Mucosa of oesophagus. D) Mucosa of ileum. Show Answer Correct Answer: A) Submucosa of duodenum. 25. 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. 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