Which one of the following is a difference between facilitated diffusion and active transport?

• A

  Facilitated diffusion is mediated by lipids and active transport by proteins 

• B

  Porters are involved in active transport but not in facilitated diffusion.  

• C

  Channels are involved in facilitated diffusion and channels are not involved in active transport.  

• D

  Facilitated diffusion sensitive to inhibitors and active transport is insensitive to inhibitors.