What is diffusion. How does it help in tranport of materials in and out the cell
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Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
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The movement of particles form higher concentration to lower . material does in and out by SPM semi /selective permeable memberane
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