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Diffusion of Cells
| Question | Answer |
|---|---|
| diffusion | the net movement of the particles of a substance from where they are more concentrated to where they are less concentrated |
| equilibrium | the number of molecules in a substance moving in one direction is equal to the number moving in the other direction, and the system is said to be in equilibrium, or balance |
| selectively permeable membrane | allows substances to cross the membrane more easily than others and blocks the passage of some substances altogether |
| passive transport | the name of the process of diffusion across a membrane |
| facilitated diffusion | transport proteins provide a pathway for certain molecules to pass |