Microscope, Cell Size, P&E

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7 Terms

1
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Magnification

how big the picture of the cell gets

ex - 0.2,0.4,0.6

2
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Resolution

quality

3
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Transmission elec.

  • electrons through the specimen

  • specimen must be thin slice (bad)

  • higher resolution (good)

4
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Scanning elec. 

  • bounces electrons off surface 

  • high resolution (good) 

  • expensive (bad)

  • 3-D

5
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Limits of Cell Size

  • keeps cell from getting big

  • 1in 3in

  • size goes up - volume increases faster than surface area 

6
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Prokaryotes

  • small

  • no nucleus and membrane

  • 1 chromosome

  • unicellular

7
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Eukaryotes

  • larger

  • nucleus

  • many chromosomes

  • uni or multicellular