ATI RN
Digestive System Multiple Choice Questions Questions
Question 1 of 5
The cells of the proximal convoluted tubule contain a lot of mitochondria. Why?
Correct Answer: D
Rationale: Mitochondria provide ATP for active transport of nutrients like glucose in the proximal convoluted tubule.
Question 2 of 5
Which of the following parts of the digestive system has the most important role in nutrient absorption?
Correct Answer: D
Rationale: The small intestine is the primary site for nutrient absorption due to its large surface area and specialized structures like villi and microvilli.
Question 3 of 5
Match: Chyme
Correct Answer: A
Rationale: Chyme is the semi-fluid mass of partly digested food expelled by the stomach into the duodenum.
Question 4 of 5
Which of the given enzymes is responsible for the digestion of milk protein?
Correct Answer: D
Rationale: Rennin is responsible for the digestion of milk protein. Rennin is present in the human body in its inactive form called prorenin. When we consume milk, it reacts with the hydrochloric acid present in the stomach. Hydrochloric acid activates the inert prorenin and converts it into active Rennin.
Question 5 of 5
What is the role of mucus secreted by the stomach?
Correct Answer: A
Rationale: Mucus or Gastric mucus is a gel barrier secreted by epithelial cells & glandular cells in the stomach wall. It protects the inner lining of the stomach from HCl.