Question

in the cell seprates cytoplasm from the external enivirorment

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Answer 1

Explanation:

The plasma membrane

Both prokaryotic and eukaryotic cells have a plasma membrane, a double layer of lipids that separates the cell interior from the outside environment. ... The membrane separates the extracellular space, outside of the cell, from the cytosol inside the cell.

Answer 2

Answer:

The membrane separates the extracellular space, outside of the cell, from the cytosol inside the cell. The plasma membrane is the border between the interior and exterior of a cell. As such, it controls passage of various molecules—including sugars, amino acids, ions, and water—into and out of the cell.