1. Osmosis Transport of water from a high water potential to a low water potential through a partially permeable membrane

2. Partially permeable membrane

3. Explain why and how the water molecules move: ……………………………………………………………………… ……………………………………………………………………… ……………………………………………………………………… ……………………………………………………………………… ………………………………………………………………………

4. Osmosis in plant cells

5. A: water absorbed, vacuole expanded, cell wall stretched, cell fully turgid B: water lost, vacuole smaller, cell wall less stretched, cell lost turgidity (from turgid to incipient plasmolysis, flaccid) C: extreme water loss, vacuole disappears, cell wall not streched, cytoplasm moves away from cell wall, plasmolysis

6. Osmosis in plant cells Explain: Fully turgid: ………………………………………………………………………. Explain: Incipient plasmolysis, flaccid: ………………………………………………………………………. Explain: Plasmolysis: ……………………………………………………………………….

7. Osmosis in animal cells

8. Osmotic pressure Hypotonic: outside higher water potential than inside Isotonic: outside wayter potential equal to inside Hypertonic: outside lower water potential than inside

9. Osmotic pressure Explain: Hypertonic: …………………………………………………………………….. Explain: Hypotonic: …………………………………………………………………….. Explain: Isotonic: ……………………………………………………………………..

10. Osmosis in red blood cells

11. Osmosis experiment with potatoes Setup: Fresh potato Boiled potato