Interior of all the cells is separated from the outside environment by
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Cell membrane
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Microtubules
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Nucleosomes
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Cytosol
A
Correct answer
Explanation
The cell membrane is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively-permeable to ions and organic molecules and controls the movement of substances in and out of cells. It consists of the phospholipid bilayer with embedded proteins.