1. Osmosis Review

2. 1. Hypertonic solutions Plant cells  the central vacuole loses water and the cells shrink causing wilting. Animal cells  shrink (plasmolysis)

3. 2. Hypotonic Solution Plant cells  CV fills with water, plant becomes stiff and rigid, CW keeps the plant from bursting Animal cells  swell, may burst (“LYSIS”)

4. 3. Isotonic solutions Plant cells Equilibrium Animal cells - water moves back and forth – no change – GOOD!!!

5. PredictPredict what would happen to the cells below…. 1. RBC – hypotonic solution 2. Elodea – isotonic solution 3. Paramecium – hypertonic solution

6. LAB: Osmosis in Elodea

7. Let’s review the Osmosis LabOsmosis Lab

8. Red onion cells

9. How do animal cells react differently?