1. SUPERBOWL MONDAY!  Objective:  SWBAT remaster objectives from the Unit 2 test  Catalyst:  What moves during diffusion?  What happens to cells in a hypertonic solution?  What happens during active transport?

2. Agenda  Catalyst  REMASTERY  REMASTERY CHANCE  EXIT QUESTION

3. Diffusion  Diffusion is when solute moves from high to low concentration

4. Diffusion  Only if the membrane is permeable to the solute!  Otherwise…  OSMOSIS!

5. Osmosis  Osmosis is when water moves from high water concentration to low water concentration  How do you calculate water concentration??  Solute plus water=100%!

6. Hypertonic, Hypotonic, Isotonic  Hypertonic= more water inside!  Hypotonic= less water inside!  Isotonic= same water inside and out!

7. Hyper, Hypo, Iso? 72% Sugar Solution 34% Sugar Solution

8. 55% solute 85% solute

9. Hypertonic Solution Outside Cell Inside Cell 70% water 50% water

10. Hypotonic Solution Outside Cell Inside Cell 22% water 40% water

11. Isotonic Solution Inside Cell Outside Cell 90% water

12. What happens in each situation?  Water moves from high to low

13. Hypertonic Solution Water Inside Cell Outside Cell 60% water

14. Water Hypotonic Solution Outside Cell Inside Cell 22% water 40% water

15. What happens in each situation?  Hypertonic- corn syrup- cell gets smaller  Hypotonic- distilled water- cell gets bigger (bursts)  Isotonic- cell stays the same size

16. Active Transport  Instead of moving towards equilibrium, cell moves away from equilibrium…  TAKES ENERGY! (ATP)

17. Why is this active transport?

18. If solutes are moving from L  R

20. Got it?  Remastery Quiz time!  Then… HUMAN BODY VIDEO!!!

21. Exit Question When we have a guest speaker, what norms do you think we should follow?