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IB Biology HL A2.2.2 Microscopy Skills Questions

Practise IB Biology HL A2.2.2 by calculating magnification and cell size, using scale bars and applying microscope measurement methods.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Calculate magnification from a scale-bar or stated actual size and image measurement, showing the ratio and correct units.
  • Calculate the actual size of a cell or cell structure from a scale bar or magnification, converting units and reporting the required unit.
  • Use an eyepiece graticule or microscope scale to measure a specimen and explain the calibration or equipment used.
  • Outline the focusing sequence for a light microscope, starting with low power and refining focus safely.
  • Compare magnification, resolution and relative microscopic sizes to explain differences in cell images or visibility.

Learn this topic

Study A2.2.2—Microscopy skills conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A2.2.2 Microscopy Skills Questions question 1

[Maximum number: 1]

Calculate the magnification of the electron micrograph.

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