A-LevelBiologyCell structure9700/12 · May/June 2014 · Q21 Mark
The diagram shows a stage micrometer viewed with an eyepiece graticule scale, using a magnification of ×400. [Figure 2.1] Using the same magnification, a chloroplast is measured and found to be 4 eyepiece graticule divisions long. How long is the chloroplast?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A1.0 × 10¹ μm
B4.0 × 10² μm
C2.5 × 10⁻¹ μm
D2.5 × 10⁻² μm
✓ Correct answer
A: 1.0 × 10¹ μm
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