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 molecular movement is limited by the number of available carrier molecules.
D) facilitated diffusion never eliminates the concentration gradient.
E) the rate of molecular movement is not limited by the number of available carrier molecules.