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IB Biology SL 2.2.2 Microscopy Skills

Practise IB Biology SL 2.2.2 by measuring cells from micrographs, calculating magnification and converting between units accurately.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Calculate magnification or actual size from a scale bar, measured image and matching units.
  • Use microscopy images to order cell structures by size and identify the correct measuring equipment.
  • Show working when converting between millimetres, micrometres and magnification.

A2.2.2—Microscopy skills 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 A2.2.2—Microscopy skills question 1 — IB Biology SL

State how the magnification of the microscope was calculated.

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