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Enzymes: AQA A‑Level Chemistry questions

AQA A-Level Chemistry past-paper questions on 3.3.13.3 Enzymes, 2008–2025, with mark schemes and examiner’s reports where available.

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  1. Q34

    June 2025 · Paper 3

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  2. Q35

    June 2023 · Paper 3

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  3. Q02.4

    November 2020 · Paper 2

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  4. Q34

    Specimen · Paper 3

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All 4 questions on Enzymes, as a list
  1. June 2025, Paper 3, Q34 (1 mark): Which statement about enzymes is correct? [1 mark] A Enzymes are a type of nucleotide. B Enzymes are polymers. C Enzymes are not affected by changes of pH. D En
  2. June 2023, Paper 3, Q35 (1 mark): Which statement about enzymes is not correct? [1 mark] A The tertiary structure of an enzyme influences which molecules can bind to the active site. B The actio
  3. November 2020, Paper 2, Q02.4 (2 marks): Figure 4 shows optical isomers F and G. Figure 4 Isomer F is the active compound in the medicine ibuprofen. In the manufacture of ibuprofen both isomers F and G
  4. Specimen, Paper 3, Q34 (1 mark): A drug is designed to simulate one of the following molecules that adsorbs onto the active site of an enzyme. Which molecule requires the design of an optically

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