| Term | Definition |
| Osmosis | The diffusion of water against a concentration gradient, does not use energy |
| Diffusion | movement of particles from higher concentration to lower concentration |
| Concentration gradient | when there is more particles on one side than another |
| Dynamic equilibrium | when all the particles are equally distributed |
| Active Transport | movement accross the membrane that requires energy |
| Passive Transport | movement of particles from greater concentration to lesser concentration |
| Facilitated Diffusion | Diffusion with the help of a protein in the plasma membrane |
| Pump | Active diffusion with the help of a protein |
| Endocytosis | The internalization of particles into a cell--how a cell eats |
| Exocytosis | Large particles exiting the cell--how the cell throws up |
| Plasmolysis | When a plant cell is in a hypertonic solution--shrinks |
| Turgor Pressure | When a plant cell is hypotonic--not wilted |
| Hypertonic | A solution in which a cell would shrink |
| Hypotonic | A solution in which a cell would swell |
| Isotonic | A solution in which the cell reaches a dynamic equilibrium |