Which of the following statements is not true about facilita

Which of the following statements is not true about facilitated diffusion?

a. It requires specific transport molecules in the plasma membrane.

b. A transporter protein undergoes a change in shape to accomplish the transfer.

c.A substrate molecule is transported from an area of high concentration to low concentration.

d. It requires ATP.

e. It is driven by osmotic pressure.

Solution

B. A transporter protein undergoes a change in shape to accomplish the transfer.

Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a cell\'s membrane via specific transmembrane integral proteins. Larger molecules are transported by transmembrane carrier proteins, such as permeases, that change their conformation as the molecules are carried across (e.g. glucose or amino acids).