Card 65 / 108: Facilitated diffusion and active transport
A) both transport molecules into or out of a cell.
B) are both not very specific as to which molecules are transported.
C) both require a concentration gradient to function.
D) both require an expenditure of energy in order to transport the molecules.
E) both require a concentration gradient to function AND both require an expenditure of energy in order to transport the molecules.

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