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- Created by: Bryony Heath
- Created on: 06-12-12 08:34
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- Cell Signalling
- Why?
- So the cell can stay in contact with its environment and with other cells
- enables them to react to changes in their environment
- very useful in multicellular organisms
- The Process
- Signals arrive at the plasma membrane from outside the cell as particular substances
- e.g. a hormone or changes in electrical potential
- A receptor in the cell's plasma membrane picks up these signals, and brings about actions within the cell. This process is known as cell signalling
- Signals arrive at the plasma membrane from outside the cell as particular substances
- 3 ways cell signalling can occur
- 1 - Receptor acts as an ion channel
- the signal is a chemical that attcahes to a protein or glycoprotein acting as an ion channel
- 1 - Receptor acts as an ion channel
- Why?
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