Facilitated Diffusion Differs from Ordinary Diffusion in That

Multiple Choice

Facilitated diffusion differs from ordinary diffusion in that

A) facilitated diffusion consumes ATP.
B) facilitated diffusion moves molecules from an area of lower concentration to an area of higher concentration.
C) the rate of facilitated diffusion is limited by the number of available carrier proteins.
D) facilitated diffusion never eliminates the concentration gradient.
E) facilitated diffusion does not rely on carrier proteins.