Facilitated Diffusion Differs from Ordinary Diffusion in That

Multiple Choice

Facilitated diffusion differs from ordinary diffusion in that

A) facilitated diffusion consumes no ATP.
B) facilitated diffusion moves molecules from an area of higher concentration to lower 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.