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IB Biology SL A2.2.2 Microscopy Skills Questions

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

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

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.
  • 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 SL A2.2.2 Microscopy Skills Questions question 1

[Maximum number: 1]

The image shows a cast of the lower surface of a leaf from a busy Lizzie (Impatiens walleriana) plant as seen under a light microscope with a magnification of 600×600 \times.

Figure for Question IB Biology SL A2.2.2 Microscopy Skills Questions question 1 — IB Biology SL

State how the magnification of the microscope was calculated.

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