1. September 2014

2. Cell membrane : aka the plasma membrane; boundary between cell and environment. A bilayer of phospholipids.

3. A phospholipid : molecule with a charged phosphate group, glycerol, and TWO fatty acid chains.

4. Cell Membrane Composition

5. Cell Membrane Composition

6. Mosaic: a picture or decoration made of small, usually colored pieces of inlaid stone, glass, etc.

7. Fluid Mosaic Model: arrangement of molecules making up cell membrane.

8. Fluid Mosaic

9. Selective Permeability: allows some, but not all materials to enter.

10. Small, nonpolar molecules tend to pass through the cell membrane easily. Larger molecules are moved using vesicles.