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A-LevelBiologyCell structureMay/June 2010Paper 1 Q121 Mark

The diagram below is drawn from an electron micrograph of an animal cell. [Figure 12.1] Which represents the same cell, seen under a light (optical) microscope at ×400 magnification?

A[Diagram option A showing detailed organelles with internal structures]
B[Diagram option B showing detailed organelles with internal structures, different arrangement from A]
C[Diagram option C showing a simpler cell with only nucleus visible, cytoplasm, and cell membrane]
D[Diagram option D showing detailed organelles with internal structures, different arrangement from A and B]

✓ Correct Answer

The correct answer is C: [Diagram option C showing a simpler cell with only nucleus visible, cytoplasm, and cell membrane]

📋 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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests Cell structure in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2010 examination, Paper 1 Variant 2.

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