Unit 2: Microscopy
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Two types of microscope
Electron Light
Two types of electron microscope
Scanning (SEM) Transmission (TEM)
Advantages/Disadvantages of TEM
Advantages - Provide high resolution images Disadvantages- Specimen need to be sliced thinly.
How does staining enable cell components to become visible?
Stains increase the contrast as different components within the cells takes up the stain to varying degrees, enabling components to become visible.
What are the advantages and disadvantages of light microscopes?
Increase in magnification and resolution, both living and non-living, less magnification than electron
What are the advantages and disadvantages of electron microscopes?
Advantages: higher magnification and resolution than light, subcellular level Disadvantages: non-living only, larger, more expensive, maintenance