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Allison
Biology
18 December, 11:27
Why does diffusion occur across a cell membrane?
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Maribel Wells
18 December, 11:36
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Simple passive diffusion occurs when small molecules pass through the lipid bilayer of a cell membrane. Facilitated diffusion depends on carrier proteins imbedded in the membrane to allow specific substances to pass through, that might not be able to diffuse through the cell membrane
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