plumiGlycolysis: OCR A‑Level Biology A questions
OCR A-Level Biology A past-paper questions on 5.2.2.2 Glycolysis, 2016–2025, with mark schemes and examiner’s reports where available.
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Q17(a)(i)
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All 6 questions on Glycolysis, as a list
- June 2025, Paper 1, Q17(a)(i) (1 mark): State the type of reaction that is catalysed by PFK. [1]
- June 2025, Paper 1, Q17(a)(v) (2 marks): ATP is converted to ADP and then AMP (adenosine monophosphate) when ATP provides energy for processes in the cell. AMP reverses the inhibition of PFK by ATP. Us
- June 2025, Paper 1, Q17(c)(iii) (2 marks): Respiration of glucose involves a series of oxidation reactions. Explain how oxidation occurs in glycolysis. [2]
- June 2019, Paper 3, Q2(d)(i) (2 marks): Suggest why the use of fructose allows naked mole rats to survive without oxygen for a long time. [2]
- June 2018, Paper 3, Q2(a) (4 marks): Describe the production of ATP by substrate-level phosphorylation in different stages of respiration with reference to the number of ATP molecules produced. [4]
- June 2017, Paper 1, Q19(c)(ii) (1 mark): What can be concluded about the difference between the effects of cyanide and fluoride on respiration in sperm? [1] for the next question
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