Osmosis
- Created by: Jo Wells
- Created on: 07-04-13 10:34
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- Osmosis
- the movement of WATER molecules across a PARTIALLY PERMEABLE MEMBRANE
- from a region of HIGH concentration to a region of LOW concentration
- the water molecules move randomly
- passive movement
- water moves into and out of cells by osmosis
- tissue fluid surrounds the cells in the body
- tissue fluid will usually have a different concentration to the fluid inside a cell
- meaning water will either move into or out of the cell
- if a cell is short of water, the solution inside it will become quite concentrated
- usually meaning the solution outside the cell is more dilute and that water will move into the cell
- if a cell has lots of water the solution inside it will be more dilute
- water will be drawn out of the cell and into the tissue fluid
- if a cell is short of water, the solution inside it will become quite concentrated
- meaning water will either move into or out of the cell
- tissue fluid will usually have a different concentration to the fluid inside a cell
- tissue fluid surrounds the cells in the body
- the movement of WATER molecules across a PARTIALLY PERMEABLE MEMBRANE
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