The end products of digestion enter the cells of a vertebrate by the process of

Correct Answer: A

Rationale: Absorption is the process by which digested nutrients (end products) are taken up by cells lining the digestive tract and enter the bloodstream or lymph for distribution to body cells. Osmosis is water movement, not nutrient uptake. Emulsification is fat breakdown, not cellular entry. Egestion is waste expulsion, not nutrient absorption.

Correct Answer: C

Rationale: In the stomach, gastric juices (acid, enzymes) mix with food, and muscles churn it into chyme, making C correct. Digestion occurs (not A), food doesn't move quickly to the intestine , and complete digestion/absorption happens later in the small intestine, not stomach .

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: C

Rationale: Faster peristalsis reduces time for nutrient absorption, like amino acids, making C correct.

Correct Answer: D

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