Question

Glucose is absorbed in intestine by?

• A. Secondary active transport
• B. Facilitated diffusion
• C. Simple diffusion
• D. Primary active transport

Answer 1

The Correct Option is B

Glucose absorption in the intestine primarily occurs through facilitated diffusion. This involves the use of transport proteins called GLUT transporters which help in the movement of glucose molecules across the intestinal epithelium. The process of facilitated diffusion is a passive transport mechanism meaning it does not require energy from ATP compared to active transport processes. It relies on the concentration gradient of glucose across the intestinal wall, moving glucose from a region of higher concentration (inside the intestinal lumen) to a region of lower concentration (inside the intestinal epithelial cells). In this context, facilitated diffusion using GLUT transporters is efficient and vital for the body's regulation of glucose levels. Thus, the correct answer is facilitated diffusion.