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A-LevelBiologyBiological moleculesOct/Nov 2025Paper 1 Q101 Mark

Which bonds between amino acids hold the shape of the secondary structure and also the tertiary structure of proteins?

Apeptide bonds
Bdisulfide bonds
Chydrogen bonds
Dionic bonds

✓ Correct Answer

The correct answer is C. This question tests the candidate's understanding of biological molecules within the Biologysyllabus. The examiner's mark scheme requires...

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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...

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About This A-Level Biology Question

This multiple-choice question appeared in the Cambridge A-Level Biology (9700) Oct/Nov 2025 examination, Paper 1 Variant 2. It tests the topic of Biological molecules and is worth 1 mark.

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