Free Revision

GCSE Biology Revision

Free topic-by-topic GCSE Biology revision — key concepts, common mistakes and interactive games for every major topic.

Pick a topic to revise the core concepts, check the mistakes examiners look for, and practise with free games. No login required.

GCSE Biology topics

Cell BiologyCell structure, microscopy, and how substances move in and out of cells by diffusion, osmosis and active transport.OrganisationLevels of organisation, enzymes and digestion, the circulatory system and transport in animals and plants.Infection & ResponsePathogens and disease, the body's defences and the immune system, vaccination and medicines.BioenergeticsPhotosynthesis and respiration — how organisms capture, store and release energy, plus limiting factors and gas exchange.Homeostasis & ResponseKeeping internal conditions stable — the nervous system, hormones, reflexes and negative feedback.Inheritance, Variation & EvolutionDNA and inheritance, reproduction, variation, natural selection and evolution, and classification.EcologyEcosystems and food webs, energy flow, the carbon and nitrogen cycles, biodiversity and human impact.

← All revision guides · Play in the Subjects Arcade →