Multiple Choice
What is the primary difference between diffusion and facilitated diffusion?
A) One is active and the other is passive.
B) One requires ATP and the other does not.
C) Diffusion involves the movement of a substance from high concentration to a lower concentration.Facilitated diffusion moves a substance from a lower concentration to a higher concentration.
D) Facilitated diffusion uses a "helper" molecule to move a substance passively.
Correct Answer:

Verified
Correct Answer:
Verified
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