click below
click below
Normal Size Small Size show me how
Cell Transporrt
Cell Transport
| Term | Definition |
|---|---|
| cell transport | The movement of materials through (or across) the cell membrane |
| selective permeability | The ability of the cell membrane to allow some things to pass through while preventing other things from passing through. |
| passive transport | The movement of materials across the cell membrane that requires NO ENERGY from the cell. |
| diffustion | The movement of molecules from an area of high concentration (where the molecules are more crowded together) to a area of low concentration (where molecules are more spread apart) |
| osmosis | the movement of WATER molecules across the cell membrane. |
| equilibrium | the state where molecules are equally concentrated (balanced) on both sides of the cell membrane. |
| active transport | the movement of molecules across the cell membrane that REQUIRES ENERGY output from the cell |
| endocytosis | the process that brings LARGE particles INTO the cell through the cell membrane |
| exocytosis | the process that makes LARGE particles LEAVE the cell through the cell membrane |