1. Cell Membrane Structure

2. Selective Permeability

3. Ability to maintain homeostasis within the cell by regulating the passage of materials into and out of the cell

4. Discovery S. Singer and G. Nicolson in 1972 FLUID MOSAIC MODEL

5. Lipid Bilayer PHOSPHOLIPID main molecule of membrane

6. Lipid Bilayer CHOLESTEROL adds strength & prevents freezing

7. Protein Types marker, receptor, transport & enzymes

8. Membrane Diagram

9. Enzymes Speed up important chemical reactions to produce cell energy molecules and perform photosynthesis in plants

10. Marker Proteins identification called antigens blood type & immunity

11. Receptor Proteins receive signals from hormones and neurotransmitters immunity (antibodies)

12. Transport Proteins channels & pumps nerve signal conduction & muscle contraction