Enzymes required to digest the molecule represented in the diagram are produced in the

Correct Answer: D

Rationale: Assuming the diagram shows starch (common in such tests), salivary glands produce amylase to digest it, making D correct; the others do not primarily digest carbohydrates.

Correct Answer: D

Rationale: Bacteria in the large intestine produce vitamins like K, making D correct.

Correct Answer: C

Rationale: Assuming X connects mouth to stomach, it's the esophagus, making C correct.

Correct Answer: B

Rationale: Peristalsis churns food, increasing its surface area, making B correct.

Correct Answer: D

Rationale: Assuming Z follows the stomach, it's the duodenum, making D correct.