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Cell membranes are semi-permeable membranes so as to keep a check in the substances that move in and out of the cell. It is semi-permeable means it is selectively permeable to permit the entry of only those substances it selects.
genewho

It is important that cell membranes are semi-permeable membranes because they allow the entry of certain substances selectively, therefore, they control the chemical content of the cell.

The primary characteristic of the cell membrane is its semipermeability, that is, its ability to selectively allow or reject the entry of certain molecules into the cell.

In this sense, the cell membrane enables the exchange of water, gases and nutrients between the cell and the environment that surrounds it.

That is, it thus regulates the passage of water, nutrients or ionic salts, so that the cytoplasm is always in its optimal conditions of electrochemical potential, pH or concentration.

  • The cell membrane behaves roughly like a semi-permeable membrane, that is, allowing water to pass but not solutes.

  • There can be two elementary processes of absorption (endocytosis) or expulsion (exocytosis) of substances from the cell, which also allows the release of metabolic waste material.

Therefore, we can conclude that it is important that cell membranes are semi-permeable membranes because they allow the entry of certain substances selectively, therefore, they control the chemical content of the cell.

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