2. Do Now! Copy vocabulary words into your notebooks: cell membrane concentration diffusion osmosis equilibrium active transport passive transport

3. DIFFUSION: Active and Passive Transport

4. Another I Love Science Presentation @ 2006-All Rights Reserved ILOVESCIENCE@mac.com

5. What is the other name for the Cell Membrane? Fluid Mosaic Model

8. Passive Transport Does osmosis or diffusion require energy? No, molecules move along a concentration gradient.

9. Facilitated Diffusion Facilitated Diffusion- molecules move down a concentration gradient with the aid of special proteins.

10. Active Transport Requires Energy. ATP (form of energy made by mitochondria). Moves against the concentration gradient.

11. Endocytosis Transporting material into a cell by the in folding of a membrane.

12. 2 Types of Endocytosis Phagocytosis- Solid particles are ingested into the cell. Pinocytosis – liquids taken into the cell.

13. Exocytosis Moves materials out of the cell

15. Let’s Go to the Video!

16. One More Time!

17. Summary 1.What is Diffusion? 2.What is Osmosis? 3.What is Active Transport? 4.What is Passive Transport?

18. HW Complete class handouts.