The key difference between digestion and absorption is that
A) absorption does not occur in most animals.
B) digestion does not occur in most animals.
C) digestion occurs on molecules absorbed from the blood into the gut lumen.
D) absorption transfers digested molecules across the gut epithelium.
E) The two terms are interchangeable;there is no significant difference.

Question

Quizplus · Accepted Answer

Digestion is the process of breaking down complex food molecules into smaller soluble molecules that can be absorbed by the body. Absorption is the process of transferring these digested molecules across the gut epithelium into the blood or lymphatic system. Therefore, option D is correct as it mentions the correct definition of absorption. Options A, B, and E are incorrect as they provide incorrect information or are not accurate. Option C is partially correct but does not fully differentiate between digestion and absorption.

The Key Difference Between Digestion and Absorption Is That