A-LevelBiologyNucleic acids and protein synthesisMay/June 2018Paper 1 Q221 Mark

Which statement explains why DNA replication is described as semi-conservative?

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.

AHalf of each original strand is conserved in each new molecule of DNA.

BHalf of the base sequence of each strand is conserved in each new molecule of DNA.

COnly one strand of DNA is used as a template during replication.

DThe template for each new molecule of DNA is one strand of the original molecule.

✓ Correct Answer

The correct answer is D: The template for each new molecule of DNA is one strand of the original 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 2018 examination, Paper 1 Variant 2.

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