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.