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Ch. 1 L. 4
isadora period 4
| Term | Definition |
|---|---|
| Selectively permeable | A property of cell membranes that allow some substances to pass through, while others can not. |
| passive transport | The movement of materials through a cell membrane without using energy. |
| diffusion | The process by which molecules move from higher area of concentration to lower concentration. |
| osmosis | The diffusion of water molecules through a selectively permeable membrane. |
| active transport | The movement of materials through a cell membrane using cellular energy. |
| how do materials move in and out of cells | They move by being selectively permeable membrane. |
| different types of membrane transport and how they work | Osmosis and diffusion (passive) |
| difference between facilitated diffusion and diffusion | Diffusion is where small molecule move across the cell membrane. Facilitated diffusion is where it has help and diffusion does not |