plumiOCR A‑Level Biology B questions by topic
Every question from every OCR A-Level Biology B (Advancing Biology) paper, 2016–2025, part by part. Filter by topic, paper or year, open the mark scheme under any question, and download a set as a PDF.
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![June 2025 Paper 1, question 15: Which disease is not an example of a chronic condition? A Asthma attack B Bowel cancer C Emphysema D Lung cancer Your answer [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h42201-jun25-15-qp.webp?v=3)
![June 2025 Paper 1, question 16: Which molecule is used to donate electrons to the electron transport chain during oxidative phosphorylation? A ADP B ATP C Reduced NAD D Reduced NADP [1] Your a](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h42201-jun25-16-qp.webp?v=3)
![June 2025 Paper 1, question 19: The diagram shows the ultrastructure of a chloroplast. A D B C What is the site of light-independent reactions? Your answer [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/h42201-jun25-19-qp.webp?v=3)
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