A-LevelBiologyNucleic acids and protein synthesisMay/June 2021Paper 1 Q171 Mark

Human chromosomes have different parts. Some parts are more numerous than others. Which parts are listed in order from most numerous to least numerous in a human white blood cell?

Q: What topic does this question test?

This question tests Nucleic acids and protein synthesis in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Acentromere → nucleotide → histone protein

BDNA molecule → telomere → centromere

Chistone protein → telomere → DNA molecule

Dtelomere → centromere → nucleotide

✓ Correct Answer

The correct answer is C: histone protein → telomere → DNA molecule

📋 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 Nucleic acids and protein synthesis in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2021 examination, Paper 1 Variant 2.

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