Enzymes and Digestion of Carbs, Proteins, Fats Practice Questions
40 free Enzymes and Digestion of Carbs, Proteins, Fats practice questions for the Physiology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
40 questions
All Enzymes and Digestion of Carbs, Proteins, Fats questions
- Q1. Which enzyme initiates carbohydrate digestion in the oral cavity?
- Q2. Which enzyme is responsible for protein digestion in the stomach?
- Q3. Which pancreatic enzyme digests triglycerides?
- Q4. Which substance is essential for efficient fat digestion?
- Q5. Which enzyme converts starch into maltose in the small intestine?
- Q6. Which brush border enzyme splits lactose into glucose and galactose?
- Q7. Which enzyme activates trypsinogen in the duodenum?
- Q8. Which product of protein digestion is mainly absorbed by enterocytes?
- Q9. Which enzyme digests nucleic acids in the intestine?
- Q10. Which carbohydrate is not digested by human digestive enzymes?
- Q11. Which pancreatic protease cleaves peptide bonds at aromatic amino acids?
- Q12. Which enzyme converts maltose into glucose?
- Q13. Which factor protects the intestinal mucosa from autodigestion?
- Q14. Which enzyme digests proteins into amino acids at the brush border?
- Q15. Which digestion product of fats enters the lymphatic system?
- Q16. Which enzyme deficiency causes lactose intolerance?
- Q17. Which hormone stimulates secretion of pancreatic digestive enzymes?
- Q18. Which enzyme remains active in acidic pH?
- Q19. Which digestion product directly stimulates sodium-dependent glucose absorption?
- Q20. Which enzyme breaks down isomaltose at the intestinal brush border?
- Q21. Salivary alpha-amylase initiates the digestion of starch in the mouth. Which of the following best describes why its activity ceases shortly after the food ent…
- Q22. Pancreatic amylase is highly efficient at breaking down amylose and amylopectin, but it cannot cleave which specific bond type found in branched starches?
- Q23. Which enzyme is responsible for the final step of carbohydrate digestion by breaking down limit dextrins into individual glucose molecules?
- Q24. Pepsinogen is the inactive zymogen secreted by gastric chief cells. What is the primary mechanism for its conversion into the active enzyme pepsin?
- Q25. The 'master switch' for protein digestion in the small intestine is the activation of trypsinogen. Which enzyme, located on the duodenal mucosa, initiates this…
- Q26. Which of the following pancreatic proteases is classified as an 'exopeptidase', meaning it cleaves individual amino acids from the ends of peptide chains?
- Q27. Bile salts are essential for fat digestion, but they can actually inhibit the action of pancreatic lipase by displacing it from the fat droplet. How does the b…
- Q28. What are the primary end-products of triglyceride digestion by pancreatic lipase?
- Q29. In infants, which enzyme plays a more significant role in lipid digestion compared to adults, due to its ability to function without bile salts and at a lower…
- Q30. Which brush border enzyme is unique because it is the only one responsible for digesting a specific disaccharide into one molecule of glucose and one molecule…
- Q31. The digestion of proteins does not end at the brush border. Which of the following is true regarding the final stages of protein digestion?
- Q32. A patient with a congenital deficiency of enterokinase (enteropeptidase) would likely suffer from malabsorption of which nutrients?
- Q33. Which of the following describes the function of the enzyme Phospholipase A2?
- Q34. What is the primary physiological purpose of forming micelles during fat digestion?
- Q35. Which of the following carbohydrates cannot be digested by human enzymes and instead undergoes fermentation by colonic bacteria?
- Q36. Which of the following is a characteristic of the enzyme Elastase?
- Q37. Why is the bicarbonate secretion from the pancreas essential for the activity of pancreatic enzymes?
- Q38. Trypsin is a highly 'dangerous' enzyme if activated prematurely. Which mechanism protects the pancreas from accidental autodigestion by trypsin?
- Q39. Which enzyme converts the disaccharide found in mushrooms and insects into two molecules of glucose?
- Q40. Pancreatic lipase is the most important enzyme for fat digestion. What is the effect of the drug Orlistat on this process?