| A | B |
| cell membrane | controls what enters and exits the cell |
| mitochondria | makes ATP |
| ATP | energy made in the mitochondria |
| passive transport | movement of molecules WITHOUT energy |
| diffusion | The movement of molecules from high to low |
| osmosis | The diffusion of water |
| high to low | the direction of molecules in passive transport |
| low to high | the movement of molcules in active transport |
| active transport | The movement of molecules using energy |
| endocytosis | Movement of large particles into the cell |
| exocytosis | Movement of large particles outside the cell |
| selectively permeable | Describes the cell membrane |
| vesicle | Sac used in endocytosis and exocytosis |
| hypotonic | Causes cells to swell |
| hypertonic | Causes cells to shrivel |
| isotonic | Causes no change in cell size |
| water | What moves in osmosis |