ATI RN
Digestive System Practice Questions Questions
Question 1 of 5
Which vitamin is produced by intestinal bacteria?
Correct Answer: A
Rationale: Intestinal bacteria synthesize vitamin B12, which is absorbed in the ileum with intrinsic factor. Vitamins A, C, and D are not produced by gut bacteria.
Question 2 of 5
Having reduced amounts of Anti Diuretic hormone does what:
Correct Answer: C
Rationale: Reduced ADH increases urine output, making it dilute (insipid) due to less water reabsorption.
Question 3 of 5
The cells of the proximal convoluted tubule are specialised to absorb compounds back into the circulatory system. In what way?
Correct Answer: C
Rationale: Microvilli increase the surface area for reabsorption in the proximal convoluted tubule.
Question 4 of 5
The splitting of fat globules into glycerol and fatty acids is handled by the enzyme
Correct Answer: C
Rationale: Lipase is the enzyme that breaks down fats into glycerol and fatty acids during digestion.
Question 5 of 5
The enzyme_________________________________ is made by the pancreas and breaks longer amino acid chains into short amino acid chains.
Correct Answer: D
Rationale: Trypsin, secreted by the pancreas, breaks down larger polypeptides into shorter peptide chains during protein digestion.