Revison notes part 1 summary
- Created by: sophie
- Created on: 09-12-12 18:53
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- Exchange surface- A specialised area adapted to make it easier for molecules to cross from one side of the surface to the other
- Magnification is the measure of enlargement is how many times bigger an image is than real life.
- Resolution- the ability to distinguish between two points seperately, it is how much detail there is
- In light microscopy some stains bind to specific celle structures allowing them to be seen
- In electron microscopy stain such as metal salts and metal particles scatter the electron giving it contrast allowing the specimen to be seen
- Scanning electron microscope= 3D image- x100 000
- Transmission electron microscope= x500 000
- Resolution= 0.2nm(100x more than light microscope)
- Division of Labour- Each type of organelle has a specific role within in the cell, different organelles work together each contributing to the survival of the cell
- Ultrastructure- detail of…
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