Digestion & Absorption of Nutrients MCQ Quiz | Nutrition

1. The chemical digestion of carbohydrates begins in which part of the gastrointestinal tract?

2. The co-transporter responsible for the apical uptake of glucose and galactose from the intestinal lumen into the enterocyte is:

3. Protein digestion is initiated in the stomach by the action of which enzyme?

4. The enzyme responsible for activating trypsinogen to trypsin in the small intestine is:

5. The primary role of bile salts in lipid digestion is:

6. For absorption, long-chain fatty acids and monoglycerides are incorporated into which structures to cross the unstirred water layer?

7. After being re-esterified into triglycerides within the enterocyte, lipids are packaged into what for transport into the lymphatic system?

8. Intrinsic factor, secreted by parietal cells of the stomach, is essential for the absorption of:

9. A patient experiences bloating, cramping, and diarrhea after consuming milk. This is most likely due to a deficiency in:

10. Cholecystokinin (CCK) is released in response to fat and protein in the duodenum. Its primary functions include:

11. Secretin’s main physiological effect in response to duodenal acidity is to stimulate the pancreas to secrete:

12. Fructose is absorbed from the intestinal lumen into the enterocyte primarily via which transporter?

13. Pepsinogen is converted to its active form, pepsin, by the action of:

14. The absorption of heme iron is more efficient than non-heme iron and occurs primarily in the:

15. The digestion of starch in the small intestine is primarily carried out by:

16. Most water-soluble nutrients are absorbed into the ______, while most fat-soluble nutrients are absorbed into the ______.

17. Di- and tri-peptides are absorbed into the enterocyte from the intestinal lumen via the:

18. Hartnup disease is a genetic disorder characterized by a defect in the intestinal and renal absorption of which type of nutrient?

19. The absorption of calcium in the intestine is actively regulated and enhanced by which hormone/vitamin?

20. Which cells in the gastric glands are responsible for secreting pepsinogen?

21. Sucrase, lactase, and maltase are examples of enzymes located where?

22. The function of colipase in fat digestion is to:

23. The hormone gastrin, produced by G cells in the stomach antrum, primarily stimulates:

24. The final products of protein digestion that are absorbed into the portal blood are predominantly:

25. Which enzyme, active in the stomach but secreted in the mouth, initiates the digestion of triglycerides?