Biology revision hub
Biology covers everything from the molecules inside a single cell to whole ecosystems. UK GCSE and A-Level courses (AQA, Edexcel, OCR) reward students who can recall precise definitions, explain processes step by step, and apply ideas to unfamiliar contexts.
Use the topic pages below to revise the highest-yield areas — each one comes with sample notes you can turn into flashcards, quizzes and exam-style questions in seconds.
GCSE Biology topics
Biology revision FAQs
Which exam boards does this cover?+
The topics map onto AQA, Edexcel and OCR specifications for GCSE Biology and A-Level Biology. The underlying science is the same; only the wording of mark schemes differs slightly.
How should I revise Biology effectively?+
Focus on processes (photosynthesis, respiration, the cell cycle) rather than isolated facts. Self-test with flashcards, then write 6-mark answers from memory and mark against the spec.
Are diagrams important?+
Yes — labelled diagrams of cells, the heart, the kidney and nephron, and biochemical cycles regularly appear. Practise sketching them from a blank page.