Question

Discuss glucose transport in epithelial cells, include tight junctions in your discussion.

Answer 1

Answer:

Glucose transport in epithelial cell uses Facilitated diffusion (is the process where

molecules/ions cross a biological member via specific transport integral protein) or Active transport (is the movement of molecules across a membrane from low concentration to high concentration, against the concentration gradient) depends on the need of the cell. Glucose is a 6 carbon sugar molecules which is too large to pass through cell membrane, so it is transported by active transport and Facilitated diffusion.

Tight junction prevent the movement of molecules through the space present between plasma membrane of adjacent cell, so the movement of the molecules enter the cell via diffusion or active transport.