In animals, oxygen …………….……… into cells across cell membranes to be used in ……………………..….
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Explanation:
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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Answer: diffuses and osmosis
Explanation: i believe this is right idk
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