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September 2014
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Cell membrane : aka the plasma membrane; boundary between cell and environment. A bilayer of phospholipids.
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A phospholipid : molecule with a charged phosphate group, glycerol, and TWO fatty acid chains.
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Cell Membrane Composition
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Cell Membrane Composition
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Mosaic: a picture or decoration made of small, usually colored pieces of inlaid stone, glass, etc.
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Fluid Mosaic Model: arrangement of molecules making up cell membrane.
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Fluid Mosaic
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Selective Permeability: allows some, but not all materials to enter.
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Small, nonpolar molecules tend to pass through the cell membrane easily. Larger molecules are moved using vesicles.
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