Question

facilitated diffusion requires _____. a. membrane proteins b. transport proteins c. membrane pouch d. energy

Answer 1

The answer is b. transport proteins.

Facilitated diffusion is the process of passive transport, which means without using of energy, of ions and molecules across a cell membrane. Although, this process does not require energy such as active transport, transport proteins are required. The role of transport proteins in facilitated diffusion is to provide a hydrophilic route within hydrophobic lipids of the membrane, and that way facilitate ions and molecules to cross the membrane.

Answer 2

below is wrong!!! The correct answer should be membrane proteins