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The functions of plasma membrane in a cell are:

  1. It acts as a thin barrier separating the cytoplasm from the extra-cellular fluid in which the cell lives.
  2. Protects the cell from injury
  3. Flow of substances between cell organelles
  4. Cell recognition and adhesion
  5. Possess carriers for active transport
  6. Absorption of substances through microvilli
  7. Contains various receptors, recognition centres and points of attachment on its surface
  8. Plays an important role in phagocytosis, pinocytosis and endocytosis.
  9. Takes part in transmission of nerve impulse in nerve cells
  10. Causes compartmentalization
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