A-LevelBiologyNucleic acids and protein synthesisMay/June 2010Paper 1 Q321 Mark

What would be the result of analysing part of a DNA molecule?

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.

Ahexose sugars and phosphates in equal proportion, and an equal number of cytosine and guanine bases

Bnucleotides and phosphates in equal proportion, and an equal number of adenine and cytosine bases

Cpentose sugars and phosphates in equal proportion, and an equal number of adenine and thymine bases

Dtwice as many phosphates as pentose sugars, and an equal number of adenine and guanine bases

✓ Correct Answer

The correct answer is C: pentose sugars and phosphates in equal proportion, and an equal number of adenine and thymine bases

📋 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 2010 examination, Paper 1 Variant 2.

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