IB Biology SL 2.2.3 Developments in Microscopy
Practise IB Biology SL 2.2.3 by linking electron-microscope resolution to the cell details and viruses that light microscopes cannot resolve.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain why electron microscopes reveal virus or cell detail that light microscopes cannot resolve.
- Use image quality and resolution to compare light and electron microscopy.
- State how electron microscopy expanded evidence about internal cell structure.
A2.2.3—Developments in microscopy question 1
The figure shows a transmission electron micrograph of rotavirus particles. Each rotavirus is about 70 nanometres in diameter.
State a reason for using an electron microscope to view this virus rather than a light microscope.
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