1. Cell Biology Overview  Introduction / Cell Theory  Microscopes  Cell Membranes  Energy Conversion  Cell Growth and Division  Cell Motions  Cell Organization / Protein Synthesis  Cell Specialization

2. Cell Membranes Amoeba moving Cells Dividing

3. The Cell Membrane’s role? Flexible Boundary Access Control Platform for cell recognition communication Cell Membrane Roles

4. What makes these roles possible? Flexible Boundary Controls access Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

5. Cell Membrane Structure the fluid mosaic model Fluid Mosaic Model

6. Phospholipids and Cholesterol

7. Access Control Flexible Boundary Access Control Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

8. What gets across? What does not? ? ?

10. Diffusion – the natural motion

11. Osmosis – Water and Semipermeable Membranes

12. Transport across the Membrane – Protein Channels Facilitated, Passive Transport Active Transport

13. Facilitated Passive Transport

14. Active Transport

15. Large Particle Transport- Exo- and Endo- Cytosis

16. Cell Adhesion, Recognition and Communication Flexible Boundary Access Control Platform for cell adhesion cell adhesion cell recognition cell recognition cell communication cell communication Cell Membrane Building Blocks Phospholipids Cholesterol Proteins Glycoproteins Glycolipids

17. Glycoproteins and Glycolipids Cell-cell recognition Cell-cell adhesion Cell signaling Cell-cell recognition