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Plasma Membrane
PHOSPHOLIPID BILAYER
  • Comprises: Proteins, Cholesterol, Carbohydrates.
  • Separates cell from external environment; controls the flow of material into and out of it.
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Plasma Membrane

Plasma Membrane
  • Double layer
    • Each layer comprises a row of phospholipids; thus it is often called the phospholipid bilayer.
  • Comprises:
    • Proteins,
    • Cholesterol
    • Carbohydrates
    • They associate with the bilayer in a variety of ways.
  • It separates the cell from its external environment and controls the flow of material into and out of it.
    • external environment ("extracellular space")
    • internal environment ("cytosol"), which is the portion of the cytoplasm not contained within organelles.

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