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IB Biology A2.2.3 Developments in microscopy

IB Biology A2.2.3 Developments in microscopy
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise choosing between light, electron and immunofluorescence microscopy using image quality, resolution and specimen-use evidence.

How this is tested

  • compare light and electron images by linking image quality to resolution
  • explain why viruses or very small structures may require an electron microscope
  • state a practical advantage of light microscopy, such as observing living tissue
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