Aug 24
2.12 Definitions of diffusion, osmosis and active transport
Recall simple definitions of diffusion, osmosis and active transport
- These are the three ways that substances move in or out of cells
- Diffusion is when molecules move from a regent of their high concentration to a regent of their low concentration
- Osmosis is the movement of water
- The rule of osmosis is water will move form dilute solution to the concentration solution through a membrane
- Active transport occurs when special carrir proteins on the surface of a cell pick up particles from one side of the membrane and the transport them to the other side.


