click below
click below
Normal Size Small Size show me how
CH 1-4 cell membrane
Jobs of cell membrane
Term | Definition |
---|---|
active transport | movement of substances through the cell membrane using energy! |
diffusion | random movement of molecules from and area where they are crowded into an area where there is less crowding. |
endocytosis | process of taking substances into a cell by surrounding them with the cell's membrane |
equilibrium | the crowding of molecules in two areas are the same; equally spread out |
exocytosis | process in which the contents of a vacuole are moved outside a cell |
osmosis | the diffusion of water through the cell membrane |
passive transport | movement of substances through the cell membrane without using energy |
selectively permeable | allowing only somethings to pass through |
vacuole | a small membrane-wrapped sack in a cell |