F211 Cells, Exchange and Transport- Microscopes

Quick revision of Microscopes, includes Magnification, Resolution, Preparation of specimens, Equations, Advantages and Disadvantages, Micrometres and Nanometres.

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  • Created by: Olivia
  • Created on: 22-12-11 18:41

1. Which of these is the correct equation for Magnification?

  • magnification=size of image/real size
  • magnification=size of image x real size
  • magnification=real size/size of image
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2. Which of these is also an equation to find Magnification?

  • magnification=length of scale bar/length bar represents
  • magnification=length of scale bar x length it represents
  • magnification=length bar represents/length of scale bar

3. 1mm=

  • 10nm
  • 100nm
  • 1000um
  • 10000um

4. What is the maximum resolution of a Light Microscope?

  • 20um or 20,000nm
  • 2um or 2,000nm
  • 0.2um or 200nm
  • 0.02um or 20nm

5. Which of these is the maximum magnification and resolution of a Scanning Electron Microscope (SEM)

  • 250,000x and 0.005um
  • <1,000,000x and 0.005um
  • 500,000x and 5nm
  • >1,000,000x and 0.5um
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