| A | B |
|---|
| diffusion | when a substance moves from high to low |
| osmosis | the movement of water |
| isotonic | a type of solution where the concentration of water is equal |
| hypertonic | a type of solution where water leaves the cell |
| hypotonic | a type of solution where water enters the cell |
| protein pumps | a type of active tramsport where a pump moves ions against the gradient |
| active transport | transport requiring energy |
| passive transport | transport not requiring energy |
| endocytosis | a large molecule pushes against the membrane and enters |
| exocytosis | a large molecule exits the cell |
| ATP | a molecule that stores a tiny amount of energy |
| downstream | WITH the concentrationgradient |
| upstream | AGAINST the concentration gradient |
