Which of the following is TRUE about facilitated diffusion? A. Facilitated diffusion assists small non-polar molecules to cross the plasma membrane. B. Facilitated diffusion uses energy to move large...

Which of the following is TRUE about facilitated diffusion? A. Facilitated diffusion assists small non-polar molecules to cross the plasma membrane. B. Facilitated diffusion uses energy to move large molecules against their concentration gradient. C. Facilitated diffusion requires a protein channel or carrier protein. D. Facilitated diffusion only occurs in the nucleus.