Question

The erythrocyte glucose transporter is an example of
(a) Simple diffusion
(b) Active transport
(c) Facilated diffusion
(d) Ion driven active transport

Answer 1

→Answer is :

This is an example of a membrane protein facilitating passive transport in which net flux can only occur down a concentration gradient of glucose.

→GLUT1 is highly abundant in the mammalian erythrocyte membrane where it can rapidly equilibrate glucose between the cytoplasm of the erythrocyte and the blood plasma..

Answer 2

Answer:

Explanation:

Facilitated diffusion:

Diffusion of solutes through transport proteins in the plasma membrane is referred to as facilitated diffusion. Passive transport is a subset of facilitated diffusion. Because the solution is travelling down the concentration gradient, assisted diffusion is still passive transport even when it incorporates transport proteins.

The cell membrane can be easily traversed by small, nonpolar molecules. Polar molecules (like water) and ions cannot, however, due to the hydrophobic nature of the lipids that make up cell membranes. Instead, they use transport proteins to diffuse across the membrane. Certain chemicals or ions can diffuse across the membrane thanks to a transport protein that crosses the entire membrane. Transport proteins that participate in assisted diffusion include channel proteins, gated channel proteins, and carrier proteins.

The erythrocyte glucose transporter is an example of Facilitated diffusion.

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