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AQA AS biology ticklist
3.2.1.3
methods of studying cells
Methods of studying cells
 
Pages
The principles and limitations of optical microscopes, transmission electron microscopes
and scanning electron microscopes.
Measuring the size of an object viewed with an optical microscope.
58-63
The difference between magnification and resolution.
58-59
Use of the formula:
58
magnification = size of image
size of real object
Principles of cell fractionation and ultracentrifugation as used to separate cell components.
Students should be able to appreciate that there was a considerable period of time during
which the scientific community distinguished between artefacts and cell organelles.
Page 1 of 1
58, 64-66
60
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