A-LevelBiologyCell structureMay/June 2013Paper 1 Q11 Mark
A light microscope is used to observe two membranes that are 200 nm apart. How far apart are the membranes when the objective lens is changed from low power to high power (x400)?
A2 μm
B20 μm
C200 nm
D2000 nm
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of cell structure within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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