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A-LevelBiologyNucleic acids and protein synthesis9700/12 · May/June 2010 · Q321 Mark

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

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

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

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Topic
Nucleic acids and protein synthesis, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2010 Paper 1 Variant 2, question 32.

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