A Level Biology Revision Search A Level Biology Revision Quick LinksAS Level Biology WorksheetsA Level Biology WorksheetsExam Questions by Topic (AQA)Maths For A Level Biology Questions and TipsA Level Biology Past PapersAQA Past PapersEdexcel Past PapersOCR Past PapersFull List of A Level Biology ResourcesAS Biology - Biological MoleculesCarbohydrateAllQuestionAnswerEnzymesAllQuestionAnswerLipids AllQuestionAnswerProteins AllQuestionAnswerWater & Inorganic IonsAllQuestionAnswerAS Biology - Cells and MicroscopyBiological MembranesAllQuestionAnswerCell Cycle and DNA ReplicationAllQuestionAnswerCell StructureAllQuestionAnswerExchange Across Cell MembranesAllQuestionAnswerMeiosisAllQuestionAnswerMicroscopy and Studying Cells AllQuestionAnswer AS Biology - DNA and Protein SynthesisIntroduction to Genetics AllQuestionAnswerNucleic Acids & DNA ReplicationAllQuestionAnswerTranscription and TranslationAllQuestionAnswerAS Biology - The Immune SystemImmune System AS BiologyAllQuestionAnswerImmunity and Vaccines AS BiologyAllQuestionAnswerHIV AS BiologyAQAQuestionAnswerPathogens and Disease AS BiologyOCR EdexcelQuestionAnswer AS Biology - Mass TransportHaemoglobin and Dissociation Curves AS BiologyAllQuestionAnswerMass Transport in Plants AS BiologyAllQuestionAnswerThe Heart & Circulatory SystemAllQuestionAnswerBlood and Tissue Fluid AS BiologyEdexcelQuestionAnswerAS Biology - Genetic Diversity and BiodiversityGenetic Diversity & AdaptationAllQuestionAnswer AS Biology - Exchange with the EnvironmentGas Exchange in OrganismsAllQuestionAnswerDigestionAQAQuestionAnswerLung FunctionAQA OCRQuestionAnswerA Level Biology - Ecosystems Populations and Nutrient CyclesMicrobiology OCR EdexcelQuestionAnswerNutrient Cycles AQAQuestionAnswerPopulations AQA OCR EdexcelQuestionAnswerEnergy & Ecosystems AQA OCR EdexcelQuestionAnswerA Level Biology - Gene Expression and Gene TechnologiesDNA Fingerprinting AQA OCRQuestionAnswerGene Technology AQA OCR EdexcelQuestionAnswerProbes and HybridisationAQA OCR EdexcelQuestionAnswerStem Cells AQA OCR EdexcelQuestionAnswerThe Human Genome Project AQA OCRQuestionAnswerBiotechnology OCRQuestionAnswerControl of Gene Expression AQA OCR EdexcelQuestionAnswer A Level Biology - Genes Inheritance and Natural SelectionEvolution and Natural Selection AQA OCR EdexcelQuestionAnswerInheritance AQA OCR EDEXCELQuestionAnswerMutations and Cancer AQA OCR EdexcelQuestionAnswerArtifical Selection OCRQuestionAnswerA Level Biology - Muscles and HomeostasisHomeostasis Intro AQA OCR EdexcelQuestionAnswerMuscles AQA OCR EdexcelQuestionAnswerTemperature Regulation AQA OCR EdexcelQuestionAnswerThe Kidney QuestionAnswerThe Liver AQA OCR EdexcelQuestionAnswerControl of Blood Glucose AQA OCR EdexcelQuestionAnswerControl of Heart Rate AQA OCR EdexcelQuestionAnswer A Level Biology - Photosynthesis and RespirationPhotosynthesis 1 AQA OCR EdexcelQuestionAnswerPhotosynthesis 2 AQA OCR EdexcelQuestionAnswerPhotosynthesis 3 AQA OCR EdexcelQuestionAnswerRespiration 1 AQA OCR EdexcelQuestionAnswerRespiration 2 AQA OCR EdexcelQuestionAnswerA Level Biology - Stimuli Nerves and SynapsesSynaptic Transmission AQA OCR EdexcelQuestionAnswerThe Nervous System 1 AQA OCR EdexcelQuestionAnswerThe Nervous System 2 AQA OCR EdexcelQuestionAnswerStimuli and Responses in Plants AQA OCR EdexcelQuestionAnswer