| Term | Definition |
|---|
| diffusion | movement of molecules from an area of high concentraion to an area of low concentration down the concentration gradient |
| osmosis | diffusion of water |
| isotonic solution | equal concentration inside and outside of cell |
| hypotonic solution | solution with a lower conc. of solutes than the cell; cell swels up in distilled H2O |
| hypertonic solution | solutions with a higher conc. of solutes than the cell; cell shrink in salt H2O |
| plasmolyze | cells shrink |
| active transport | uses ATP energy to move molecules from an area of low conc. to high conc. against the concentration gradient |
| passive transport | diffusion through transport protiends; no energy required |
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