OCR As Level Biology A Paper 1 2025 Question Paper

Get the official OCR AS Level Biology A H020/01 Breadth in Biology June 2025 question paper used in the Summer 2025 OCR examination series. This authentic examiner-issued PDF contains multiple-choice, practical-skills, transport, immunity, genetics, biodiversity, membrane structure, respiration, and cell biology questions exactly as presented to candidates during the live OCR assessment.

This paper includes exam questions on microscopes, ATP and phosphorylated nucleotides, stem cells, non-reducing sugars, colorimetry, membrane structure and transport proteins, glycogen and amylose, cardiac cycle, oxygen dissociation curves, the Bohr effect, immunity, biodiversity, meiosis, DNA structure and replication, plasma cells, B lymphocytes, statistical analysis, phloem loading, membrane permeability, transport systems in elephants, ECG interpretation, and stem cell applications. Pair it with the matching OCR H020/01 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 Breadth 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, exam-technique training, immunity revision, transport-system analysis, and OCR AS Biology synoptic practice.