level: Osmosis
Questions and Answers List
level questions: Osmosis
| Question | Answer |
|---|---|
| Define osmosis | the net movement of water molecules from a high water potential to a lower water potential down a water potential gradient through a selectively permeable membrane |
| What is the water potential of pure water | zero |
| What does a more negative water potential mean | the stronger the concentration of solutes in the solution |
| Define hypertonic | solution that has low water potential, therefore there's a net movement of water out of the cell into the solution. |
| What happens if an animal cell is placed in a hypertonic solution | it will shrink |
| What happens if an plant cell is placed in a hypertonic solution | it will become flaccid |
| Define plasmolysis | When the cytoplasm and plasma membrane pull away from the cell wall. |
| Define isotonic | when two solution have the same water potential, therefore there's no net movement of water |
| Define hypotonic | solution has a high water potential, therefore net movement of water is into the cell |
| What happens if an plant cell is placed in a hypotonic solution | the vacuole will swell and the contents of the cell will push against the cell wall, causing cell to be turgid |
| What happens if an animal cell is placed in a hypotonic solution | it will well and eventually burst |