2. Aim: How can we compare active and passive transport?

3. Do all things get through the cell membrane? SELECTIVELY PERMEABLE Water Molecules

4. How does a rollercoaster work?

5. When will he need energy? http://programs.northlandcollege.edu/biology/Biology1111/animations/transport1.html Should I go against the gradient or down the gradient

6. Types of Cell Transport Active transport Passive Transport

7. Active Transport Energy required Moves from low to high concentration Against concentration gradient

8. Passive Transport No energy required Moves from high to low concentration Down the concentration gradient

9. Passive Transport 1. Diffusion: H 2 O, O 2 & CO 2

10. Passive Transport (continued) 2. Osmosis: H2O

11. Passive Transport (continued) 3. Facilitated diffusion = salts & glucose (needs membrane protein)

12. Active Transport

13. Two Types of Active Transport PhagocytosisPinocytosis

14. Active Transport

15. How can you tell? 1 2 3...

16. Can you tell the difference?

17. Would you need energy?

18. Active vs. Passive Transport Active Transport Passive Transport Energy Required Direction Types