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Diffusion/Osmosis
| Term | Definition |
|---|---|
| selectively permeable | some substances can pass through the membrane while others cannot |
| diffusion | the process by which molecules move from an area of high concentration to an area of low concentration |
| osmosis | the diffusion of water molecules through a selectively permeable membrane |
| passive transport | movement of dissolved materials through a cell membrane without using cellular energy |
| active transport | movement of materials through a cell membrane using cellular energy |