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The Cell in Action
Robert Prince
Term | Definition |
---|---|
Diffusion | the movement of particles from regions of higher density to regions of lower density |
Osmosis | the diffusion of water through a semipermeable membrane |
Passive Transport | the movement of substances across a cell membrane without the use of energy by the cell |
Active Transport | the movement of substances across the cell membrane that requires the cell to use energy |
Endocytosis | the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell |