chapter 6

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Author:
kirantakhar
ID:
209090
Filename:
chapter 6
Updated:
2013-03-23 20:41:33
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tour cell
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Description:
biology 4a
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  1. light microscope
    • visible light passed through the specimen and then through glass lenses
    • can magnify upto 1000x
  2. magnification
    ration of an objects image size to its real size
  3. resolution
    measure of the clarity of the image
  4. contrast
    accentuates differences in parts of sample
  5. electron microscope (EM)
    focuses on a beam of electrons through the specimen or onto its surface
  6. scanning electron microscope (SEM)
    useful for detailed study of topography of a specimen. electron beam scans the surface
  7. transmission electron microscope(TEM)
    used to study the internal structure of cells

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