B1 Cell Structure and Transport


B1 Cell Structure and Transport

Microscopes - Electron vs. Light

Light Microscopes:

  • Magnify several hundreds (school microscopes)
  • Relatively cheap and portable
  • Uses a beam of light

Electron Microscopes:

  • Ability to see subcellular structures
  • Uses a beam of electron
  • Magnify up to x2,000,000
  • High magnification and resolution
  • Expensive and very big
  • Has to be kept in controlled environments (temperature, humidity etc.)

Magnification = Image size / Real image

Resolution is the ability to distinguish between two points. Light microscopes have a resolving power 200nm, electron microscopes have 0.2nm

Animal and Plant


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