What do facilitated diffusion and active transport have in common?
Both are examples of carrier-mediated transport.
Neither require ATP to function.
Both involve transport of a solute down its concentration gradient.
Both involve the use of energy provided by ATP.
Both involve transport of a solute up its concentration gradient.

Facilitated diffusion and active transport are both forms of carrier-mediated transport, but they differ in their direction of movement and energy requirement.

Explanation:

Facilitated diffusion and active transport are both examples of carrier-mediated transport. While facilitated diffusion moves a substance down its concentration gradient using carrier proteins, active transport pumps molecules against their concentration gradient requiring energy from ATP.

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