Facilitated diffusion through a membrane involves which of the following scenarios

saraalalwane

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2022-09-08

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Facilitated diffusion through a membrane involves which of the following

scenarios?

the diffusion of water through a selectively permeable membrane along its concentration gradient.
the movement of a molecule against its concentration gradient with the expenditure of energy
the plasma membrane surrounding (engulfi ng) the molecule & the molecule moving into the cell.
a molecule binding to a receptor which moves the molecule through the membrane without the expenditure of energy

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saraalalwane

2022-09-08

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D: facilitation is by binding to a membrane protein.

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