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A-LevelBiologyThe mitotic cell cycleOct/Nov 2016Paper 1 Q201 Mark

Which row correctly shows the behaviour of the nuclear envelope, the centrioles and the spindle during a stage of mitosis?

Astage of mitosis: prophase, nuclear envelope: disappears, centrioles: replicate, spindle: spindle microtubules begin to form
Bstage of mitosis: metaphase, nuclear envelope: not present, centrioles: begin to move to poles of cell, spindle: spindle microtubules fully formed
Cstage of mitosis: anaphase, nuclear envelope: begins to reform, centrioles: at opposite poles of the cell, spindle: some spindle microtubules shorten
Dstage of mitosis: telophase, nuclear envelope: reforms, centrioles: one beside each nucleus, spindle: spindle microtubules break down

✓ Correct Answer

The correct answer is D: stage of mitosis: telophase, nuclear envelope: reforms, centrioles: one beside each nucleus, spindle: spindle microtubules break down

📋 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 The mitotic cell cycle in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology Oct/Nov 2016 examination, Paper 1 Variant 2.

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