OCR As Level Biology A Paper 2 2025 Question Paper

Get the official OCR AS Level Biology A H020/02 Depth in Biology June 2025 question paper used in the Summer 2025 OCR examination series. This authentic examiner-issued PDF contains structured, practical-skills, data-analysis, classification, evolution, gaseous exchange, enzyme, membrane transport, and respiration questions exactly as presented to candidates during the live OCR assessment.

This paper includes exam questions on starch and cellulose structure, paper chromatography, diffusion using dialysis tubing, phospholipid bilayer permeability, exocytosis, enzyme-assisted protein extraction, catalase activity, Q10 calculations, binomial naming, Darwin’s finches, natural selection, variation in clownfish populations, gaseous exchange in fish, spirometer calculations, lung function, and ventilation mechanics. Pair it with the matching OCR H020/02 June 2025 mark scheme on markscheme.net for complete examiner-style revision and exam preparation. Updated for the 2025/2026 academic year, mobile-friendly, and instantly downloadable from markscheme.net.

This document is designed for OCR AS Level Biology A students preparing for the 2026 examination series, Year 12 learners studying Depth in Biology, retake students targeting top grades, and home-schooled candidates seeking authentic OCR exam practice under timed conditions.

It is also ideal for teachers, private tutors, revision-course providers, and parents supporting Biology revision at home. The question paper can be used for mock examinations, practical-skills preparation, classification revision, gaseous exchange analysis, and OCR exam-technique training.