The absorption of some sugars in the small intestine involves
A) osmosis.
B) diffusion.
C) cotransport.
D) phagocytosis.
E) pinocytosis.

Question

Quizplus · Accepted Answer

The absorption of some sugars in the small intestine involves cotransport, which is the movement of two different molecules across a cell membrane. This process requires the concentration gradient of one molecule to provide energy for the movement of the other molecule. In the small intestine, specific transporters facilitate the absorption of monosaccharides like glucose and galactose through cotransport with sodium ions. Therefore, option C is the best choice. Osmosis (option A), diffusion (option B), phagocytosis (option D), and pinocytosis (option E) are not involved in the absorption of sugars in the small intestine.

The Absorption of Some Sugars in the Small Intestine Involves