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Explain the structure of plasma membrane.

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Solution

  • Plasma membrane acts as a selectively permeable membrane. It allows entry of those useful substances which are needed for the cell. It does not allow entry of the harmful and unwanted substances.
  • Plasma membrane keeps the homeostasis in the cell. The cell is kept in steady state even if the external environment changes.
  • Plasma membrane is responsible for processes of endocytosis and exocytosis.
  • The processes of diffusion and osmosis are possible only due to plasma membrane.
  • In animal cells, plasma membrane is the outermost protective covering of the cell.

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