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Chapter 4
L4
| Term | Definition |
|---|---|
| Selectively Permeable | property of cellular membranes that only allows certain molecules to enter or exit the cell. |
| Passive Transport | movement of ions and other atomic or molecular substances from an area of high concentration to an area of low concentration without any energy input. |
| Diffusion | movement of particles from an area of higher concentration to an area of lower concentration, and it can be observed in various everyday situations. |
| Osmosis | a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one. |
| Active Transport | process of transferring substances into, out of, and between cells, using energy. |
| what are the different types of membrane transport | passive transport, osmosis, bulk transport, facilitated diffusion, and active transport |
| explain the difference between facilitated diffusion and diffusion | Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration, while facilitated diffusion involves specific transport proteins to help larger or polar molecules cross the cell membrane. |
| example how materials move in and out of cells | Diffusion, osmosis, and facilitated transport |
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