OCR GCSE Combined Science Biology A Paper 1 2025 Mark Scheme

Access the official OCR GCSE Combined Science A Gateway Science J250/01 Biology Paper 1 (Foundation Tier) June 2025 mark scheme PDF. This examiner-approved OCR document contains the exact accepted answers, mark allocations, AO1/AO2/AO3 assessment guidance, level descriptors, and examiner instructions used during marking for the June 2025 GCSE Biology examination series.

The mark scheme includes detailed answers and examiner guidance for reflex actions, neurones, osmosis in onion epidermal cells, stem cells, active transport, hormonal contraception, double circulation, diabetes, enzyme activity, potometer investigations, transpiration, stomatal density, and practical-method evaluation. It also explains how OCR awards marks for scientific terminology, graph interpretation, practical investigations, calculations, sequence questions, and Level 3 extended-response biology questions.

Use this OCR J250/01 mark scheme alongside the matching OCR GCSE Biology June 2025 question paper on markscheme.net for accurate self-assessment, timed mock-exam practice, and examiner-style revision. Fully updated for the 2025/2026 academic year and instantly downloadable for effective OCR GCSE Biology preparation.

This document is designed for OCR GCSE Biology students preparing for the 2026 examination series, especially Foundation Tier students studying OCR Combined Science A Gateway Science. It is ideal for Year 10 and Year 11 students, resit candidates, independent learners, and home-schooled students who want to understand exactly how OCR examiners award marks in GCSE Biology.

It is also highly valuable for GCSE Science teachers, tutors, intervention coordinators, revision-course providers, and parents supporting structured revision. The mark scheme can be used to model high-level answers, improve biological terminology, analyse examiner expectations, strengthen AO1/AO2/AO3 exam skills, and identify common mistakes before the 2026 OCR GCSE Biology examinations.