Select the correct answer.

What is the similarity between simple diffusion and facilitated diffusion?

A. Both move molecules from lower concentration to higher concentration.
B. Both move molecules from higher concentration to lower concentration.
C. Both need energy.
D. Both need transport protein.

Answer :

Final answer:

Facilitated diffusion and simple diffusion both require transport proteins for movement across the membrane.


Facilitated diffusion and simple diffusion both involve the movement of substances down a concentration gradient. The key similarity between them is that both need transport protein to assist in the movement of molecules across the membrane.

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