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Why do cells lack membrane transport proteins that are specific for the movement of Oz? Choose one: A. because oxygen is tran
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D. because oxygen dissolves readily in lipid bilayers

Oxygen is a very small molecule and is permeable through the lipid bilayer of the plasma membrane. The small size of oxygen makes its uptake easier by the cells, and passage through membrane bilayer is easy. Furthermore, the passage also depends on the diffusion of the molecule along with its solubility.

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