A-LevelBiologyThe mitotic cell cycleFeb/Mar 2025Paper 1 Q201 Mark
The photomicrograph shows plant cells in different stages of the mitotic cell cycle. Four of the cells are labelled with a number to identify them. [Figure 20.1] One of the numbered cells is within the main stage of mitosis in which the spindle begins to form. A second numbered cell is within the main stage of mitosis in which the spindle fibres shorten. Which row correctly identifies the two cells that are in these stages of mitosis?
Astage in which spindle begins to form: 1, stage in which spindle fibres shorten: 2
Bstage in which spindle begins to form: 2, stage in which spindle fibres shorten: 1
Cstage in which spindle begins to form: 3, stage in which spindle fibres shorten: 1
Dstage in which spindle begins to form: 4, stage in which spindle fibres shorten: 2
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The correct answer is D. This question tests the candidate's understanding of the mitotic cell cycle within the Biologysyllabus. The examiner's mark scheme requires...
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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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