Q: What do you call the diffusion of solutes through transport proteins in the plasma membrane?


Read this paragraph and choose the correct option from the provided answers:

What happens if a substance needs assistance to move across or through the plasma membrane? Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane. Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient.

 Choices:

- necessitated diffusion

- exposed diffusion

- Osmosis

- facilitated diffusion


A:
facilitated diffusion