3.2.1.3 Methods of studying cells-The electron microscope
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.
The difference between magnification and resolution.
Use of the formula: 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
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