Edexcel A Level Biology B exam questions and past papers

Free Edexcel A Level Biology B exam questions by topic, with mark schemes, past papers and model answers.

How to use the exam questions

Pick a topic and work through as many questions as you need until it really clicks. Spend extra time on the topics you find hardest, as that is where the biggest improvements come from. Each file includes the mark scheme, so check every answer as you go, see where you lost marks and learn exactly what a full-mark answer looks like.

A-Level Biology Flashcards for 2027 Onwards StemUp mark scheme flashcards A-Level Biology Flashcards for 2027 Onwards Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Then test yourself with the questions here. From £10.99View flashcards

Edexcel A Level Biology B exam questions by topic

Each pack with its mark scheme.

Year 1 topics

Edexcel A Level Biology B
Topic 1: Biological MoleculesCarbohydrates, lipids, proteins and nucleic acids
Topic 2: Cells, Viruses and Reproduction of Living ThingsCell structure, viruses, cell division and reproduction
Topic 3: Classification and BiodiversitySpecies, biodiversity and classification
Topic 4: Exchange and TransportGas exchange and transport in animals and plants

Year 2 topics

Edexcel A Level Biology B
Topic 5: Energy for Biological ProcessesRespiration and photosynthesis
Topic 6: Microbiology and PathogensMicrobial growth, pathogens and antibiotics
Topic 7: Modern GeneticsGenome sequencing, PCR and gene technology
Topic 8: Origins of Genetic VariationMutation, inheritance and evolution
Topic 9: Control SystemsHormones, the nervous system and homeostasis
Topic 10: EcosystemsEnergy flow, populations and human impact

Extra resources

Useful downloads for the whole course.

AS Level papers

Sit them timed, mark with the mark scheme, then compare with our model answers.

2025 Paper 1AS Level Biology B Question paperMark schemeModel answers
2025 Paper 2AS Level Biology B Question paperMark schemeModel answers
2024 Paper 1AS Level Biology B Question paperMark schemeModel answers
2024 Paper 2AS Level Biology B Question paperMark schemeModel answers
2023 Paper 1AS Level Biology B Question paperMark schemeModel answers
2023 Paper 2AS Level Biology B Question paperMark schemeModel answers
October 2021 Paper 1AS Level Biology B Question paperMark schemeModel answers
October 2021 Paper 2AS Level Biology B Question paperMark schemeModel answers
October 2020 Paper 1AS Level Biology B Question paperMark schemeModel answers
October 2020 Paper 2AS Level Biology B Question paperMark schemeModel answers
2019 Paper 1AS Level Biology B Question paperMark schemeModel answers
2019 Paper 2AS Level Biology B Question paperMark schemeModel answers
2018 Paper 1AS Level Biology B Question paperMark schemeModel answers
2018 Paper 2AS Level Biology B Question paperMark schemeModel answers
2017 Paper 2AS Level Biology B Question paperMark schemeModel answers

Past papers

Sit them timed, mark with the mark scheme, then compare with our model answers.

2025 Paper 1A Level Biology B Question paperMark schemeModel answers
2025 Paper 2A Level Biology B Question paperMark schemeModel answers
2025 Paper 3A Level Biology B Question paperMark schemeModel answers
2024 Paper 1A Level Biology B Question paperMark schemeModel answers
2024 Paper 2A Level Biology B Question paperMark schemeModel answers
2024 Paper 3A Level Biology B Question paperMark schemeModel answers
2023 Paper 1A Level Biology B Question paperMark schemeModel answers
2023 Paper 2A Level Biology B Question paperMark schemeModel answers
2023 Paper 3A Level Biology B Question paperMark schemeModel answers
2022 Paper 1A Level Biology B Question paperMark schemeModel answers
2022 Paper 2A Level Biology B Question paperMark schemeModel answers
2022 Paper 3A Level Biology B Question paperMark schemeModel answers
October 2021 Paper 1A Level Biology B Question paperMark schemeModel answers
October 2021 Paper 2A Level Biology B Question paperMark schemeModel answers
October 2021 Paper 3A Level Biology B Question paperMark schemeModel answers
October 2020 Paper 1A Level Biology B Question paperMark schemeModel answers
October 2020 Paper 2A Level Biology B Question paperMark schemeModel answers
October 2020 Paper 3A Level Biology B Question paperMark schemeModel answers
2019 Paper 1A Level Biology B Question paperMark schemeModel answers
2019 Paper 2A Level Biology B Question paperMark schemeModel answers
2019 Paper 3A Level Biology B Question paperMark schemeModel answers
2018 Paper 1A Level Biology B Question paperMark schemeModel answers
2018 Paper 2A Level Biology B Question paperMark schemeModel answers
2018 Paper 3A Level Biology B Question paperMark schemeModel answers
2017 Paper 1A Level Biology B Question paperMark schemeModel answers
2017 Paper 2A Level Biology B Question paperMark schemeModel answers
2017 Paper 3A Level Biology B Question paperMark schemeModel answers

Old specification papers

Exam questions from the previous Edexcel A Level Biology B specification, by unit.

Unit 1: Lifestyle, Transport, Genes and HealthAS · old specification Biology B Download PDF
Unit 2: Development, Plants and the EnvironmentAS · old specification Biology B Download PDF
Unit 4: The Natural Environment and Species SurvivalA2 · old specification Biology B Download PDF
Unit 5: Energy, Exercise and CoordinationA2 · old specification Biology B Download PDF

About Edexcel A Level Biology B

The Edexcel A Level Biology B exam (specification 9BI0) is made up of three written papers. Edexcel A Level Biology B Paper 1, Advanced Biochemistry, Microbiology and Genetics, covers Topics 1 to 7, from biological molecules to modern genetics. Paper 2, Advanced Physiology, Evolution and Ecology, covers Topics 1 to 4 along with Topics 8 to 10, origins of genetic variation, control systems and ecosystems. Papers 1 and 2 last 1 hour 45 minutes each. Paper 3, General and Practical Principles in Biology, lasts 2 hours 30 minutes, can test any topic on the specification and focuses on practical skills, data analysis and the core practicals.

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