A-LevelBiologyNucleic acids and protein synthesis9700/12 · Oct/Nov 2024 · Q231 Mark

The diagram shows a section of a strand of DNA. Which type of bond is labelled X?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Aglycosidic

Bhydrogen

Cpeptide

Dphosphodiester

✓ Correct answer

D: phosphodiester

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Topic: Nucleic acids and protein synthesis, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2024 Paper 1 Variant 2, question 23.

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