A-LevelBiologyCell structure9700/12 · May/June 2025 · Q11 Mark
Which row shows possible uses of an eyepiece graticule?
Acomparing the diameter of two cells viewed with a ×40 objective lens: ✓, calibrating a stage micrometer viewed with a x10 objective lens: ✓
Bcomparing the diameter of two cells viewed with a ×40 objective lens: ✓, calibrating a stage micrometer viewed with a x10 objective lens: X
Ccomparing the diameter of two cells viewed with a ×40 objective lens: X, calibrating a stage micrometer viewed with a x10 objective lens: ✓
Dcomparing the diameter of two cells viewed with a ×40 objective lens: X, calibrating a stage micrometer viewed with a x10 objective lens: X
✓ Correct answer
B: comparing the diameter of two cells viewed with a ×40 objective lens: ✓, calibrating a stage micrometer viewed with a x10 objective lens: X
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