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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 |