1
Q
Magnification
A
The degree to which the size of an image is larger than itself
2
Q
Resolution
A
The ability to distinguish between 2 objects and the amount of detail that can be seen
3
Q
TEM Microscope
A
Electrons pass through specimen
2D image
Magnification up to x500,000
Resolution 0.05-2nm
4
Q
SEM Microscopes
A
Electrons bounce off the specimen
3D image
Magnification up to x100,000
Resolution 5-50nm
5
Q
Why do electron microscopes have a very high resolution?
A
Visible light has wavelength of 400-700nm
Electrons have a wavelength of 0.004nm
The smaller the wavelength, the better the resolution
A-Level OCR Biology JK
flashcards
Decks in class (13)
# Cards
-
M2 DNA (Replication)2
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M2 RNA - 3 Forms3
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M2 Microscopes5
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M2 Organelles14
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M2 Monomers and Polymers ( C, P +NA)6
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M2 Functions of Carbohydrates2
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M2 Groups of Carbohydrates4
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M2 Monosaccharides11
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M2 Disaccharides5
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M 2 Polysaccharides9
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M2 Protein Synthesis3
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M2 Inorganic Ions2
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M2 Factors Affecting Membrane Permeability2
