Grade 10 Biology- Types of Mircoscopes

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4 Terms

1
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Compound Light Mircoscope

  • Uses light

  • two lenses

  • magnification limit of 2000x

2
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Transmission Electron Microscope

  • Uses beams of electrons

  • magnification limit of 2 000 000

  • thin specimens

  • only dead cells can be observed

3
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Scanning Electron Microscope

  • electrons are reflected from surface

  • produces 3-d image

  • good for thicker specimens

  • lacks magnification and resolution

4
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Cell Theory

  • All living things are composed of one or more cells

  • The cell is the basic unit of structure and function

  • All cells come from pre-existing cells