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galina1969 [7]
3 years ago
7

What type of molecule can easily diffuse through the plasma membrane without any help? Why?

Biology
1 answer:
babunello [35]3 years ago
7 0
Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
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