OCR GCSE Biology Revision
OCR offers two GCSE Biology routes: Gateway (Biology A) and Twenty First Century (Biology B). Both cover the core science: cells, transport, photosynthesis and respiration, health and disease, genetics, inheritance and ecology. Both are assessed entirely through written papers at the end of the course.
This page lists every Biology topic in Recall. Each topic page works equally well for either OCR route, the underlying biology is identical, only the framing and question style differ. Pre-loaded notes mean you can generate flashcards or exam-style questions in a single click.
OCR examiners reward clear, structured explanations and the correct use of scientific vocabulary. Practising six-mark questions on the topics below, and self-marking against the spec, is one of the highest-leverage things you can do.
Biology topics on OCR
Every topic below works for the OCR GCSE Biology syllabus. Click any topic to load its notes and generate flashcards, a quiz or exam-style questions.
- PhotosynthesisPhotosynthesis revision for GCSE and A-Level Biology (AQA, Edexcel, OCR). Word and symbol equations, light-dependent reactions, the Calvin cycle, limiting factors, exam questions with mark points.
- RespirationRespiration revision for GCSE and A-Level Biology: aerobic and anaerobic respiration, glycolysis, the link reaction, the Krebs cycle, oxidative phosphorylation, ATP, NAD and FAD, plus exam questions with mark points.
- EnzymesEnzymes revision for GCSE and A-Level Biology: active site, lock-and-key vs induced fit, factors affecting rate, competitive and non-competitive inhibition, Vmax and Km, plus exam questions with mark points.
- Cell StructureRevise cell structure for GCSE and A-Level Biology. Compare prokaryotic and eukaryotic cells, organelles, microscopy and exam-style FAQs.
OCR Biology FAQs
What's the difference between OCR Gateway and Twenty First Century Biology?+
Both are full OCR GCSE Biology qualifications, but they organise the same core content differently. Gateway (Biology A) is topic-by-topic; Twenty First Century (Biology B) is built around scientific issues and contexts. Pick the one your school follows, the underlying biology is the same.
How is OCR GCSE Biology examined?+
OCR GCSE Biology is assessed by two written papers at the end of the course, with no coursework. Both papers include questions on the practical activities specified in the syllabus.
What's the best way to revise for OCR Biology?+
Work through the topic list below using active recall, generate flashcards, self-test, then write extended answers from memory. Mark them against the OCR specification statements to make sure you're using the wording examiners want.
Start revising OCR Biology now
Generate flashcards, quizzes and exam-style questions from any topic above, or paste your own class notes into the Recall tool.