1. Cell mystery Observe the two cups in front of you Your challenge: Sketch what you see Figure out What’s inside the “cell” What’s outside the “cell” What happened to cause the results THE ANSWERS ARE ON PAGE 162! Any team that successfully completes the challenge within 15 minutes wins Gotta Go pass for each team member

2. Cell membranes Osmosis, Diffusion and Molecular movements

3. Plasma membrane

4. Cell (plasma) Membrane Made of: Job: Diffusion and Osmosis:

5. Some membrane fun… http://www.teachersd omain.org/resource/td c02.sci.life.cell.membr aneweb/http://www.teachersd omain.org/resource/td c02.sci.life.cell.membr aneweb/

6. Elodea (a plant) cells lab

7. Cell membrane vs cell wall

8. Cell wall.

9. Reviewing Some Basics Solution Solute Solvent

10. Isotonic solution

11. Hypotonic solution

12. Hypertonic solution

13. Blood cells

14. Osmosis Osmosis is the movement of water (red dots) through a semipermeable membrane to a higher concentration of solutes (blue dots). Water easily moves through cell membranes by osmosis.

15. 5 Major Factors affecting Osmosis/Diffusion

16. Molecular size Water Iodine Glucose Salt Starch

17. Egg lab 2006 ( Change in gms) PeriodControl DH 2 OSalt ___________________________________ 1-.2+2.3-3.1 2-.4+3.1-3.3 3-.1+3.3-2.9 4-.3+3.0-3.7 5-.1+2.9-3.5 6-.2+4.1-4.0

18. Diffusion http://www.biologycor ner.com/resources/dif fusion-animated.gifhttp://www.biologycor ner.com/resources/dif fusion-animated.gif

19. More

20. Endocytosis/Exocytosis

21. Phagocytosis(food)/Pinocytosis (liquid) same process Cell interior

22. Cell size? Why care?

23. Cell size (continued) Its all about surface area to volume ratios

24. ? How do larger multicellular organisms manage to solve this problem for a successful survival?

25. Cell size (cont)

26. Cell animation Membranes etc. http://www.bioclips.com/

27. EGG LAB TYPE II Type II (WRITE IN YOUR JOURNAL): In the egg lab, was this an example of osmosis or diffusion? How can you tell based on the results?