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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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A cellular structure that can be found in each type of cell that is unique to each type of cell, but that has a similar function
34kurt

Answer

Complex barrier to the flow of substances out of the cells,and restrictions to inflow of unwanted substances into the cells. The hydrophobic and hydrophilic nature of the cell membrane controls the entry of substances from the extracellular medium into the intracellualr. In addition the polarity restricts certain substance movement across the walls.

Serve as the selective channels  for the  influx of certain substances into the cells, and the out flux of wastes.This is through ion channels for the movements of ions across.

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Explanation:

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6 0
3 years ago
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frosja888 [35]

Answer;

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lukranit [14]
I would say the second one

3 0
3 years ago
Read 2 more answers
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