Question

In which case would facilitated diffusion be needed?

A. With large non polar molecules moving down the concentration gradient.
B. With very small non polar particles moving down the concentration gradient.
C. With large polar molecules moving against the concentration gradient.
D. With very small polar particles moving against the concentration gradient.

Answer 1

Therefore, the correct answer to this question would be option C

Step-by-step explanation:

Facilitated diffusion is a type of passive transport where a substance moves across a cell membrane from an area of high concentration to an area of low concentration, but requires the assistance of a transport protein. The transport protein acts as a channel or carrier to facilitate the diffusion of molecules that otherwise would not be able to cross the membrane easily.