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Facilitated diffusion

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requires the cell to expend energy
does not require the cell to expend energy
does not require the cell to expend energy and involves the movement of molecules up a concentration gradient
involves the movement of molecules up a concentration gradient
requires the cell to expend energy and involves the movement of molecules up a concentration gradient

1 Answer

6 votes

Answer:

Does not require the cell to expend energy and involves the movement of molecules up a concentration gradient

Step-by-step explanation:

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