ATI RN
Questions About The Digestive System Questions
Question 1 of 5
Which part of our body secrets pepsin?
Correct Answer: D
Rationale: Gastric chief cells present in our stomach secrete pepsin. It is responsible for the digestion of proteins. The stomach is responsible for the digestion of food. It secretes HCl (Hydrochloric acid) to aid digestion.
Question 2 of 5
Each part of the alimentary canal has the optimum pH for the enzymes that digest food there. What is the optimum pH for an enzyme that works in the stomach?
Correct Answer: A
Rationale: The stomach's acidic environment (around pH 2) is optimal for the function of pepsin, which breaks down proteins.
Question 3 of 5
Which process is stimulated by adrenaline in the cells of the liver?
Correct Answer: A
Rationale: Adrenaline stimulates glycogenolysis in the liver, breaking down glycogen into glucose to increase blood glucose levels.
Question 4 of 5
Large, insoluble molecules have to be digested before they can be
Correct Answer: A
Rationale: Large molecules must be broken down into smaller, soluble units before they can be absorbed across the intestinal lining.
Question 5 of 5
Which of the following digestive enzymes is NOT found in intestinal juice?
Correct Answer: B
Rationale: Trypsin is produced by the pancreas and secreted into the duodenum, not found in intestinal juice, which contains enzymes like erepsin and maltase.