Biology
A Level · Pearson / Edexcel
Computer Science
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View topicsPearson Edexcel offers two A-Level Biology routes. Biology A (9BN0) is the Salters-Nuffield specification, which teaches the science through real contexts: a case study on cystic fibrosis, for instance, introduces membranes, proteins and genetics together. Biology B (9BI0) is a conventional topic-by-topic course. Schools choose deliberately between them, and the two are not interchangeable.
The Salters-Nuffield route suits students who retain material better when it is anchored to a scenario, but it demands more from those who prefer a linear structure, since concepts recur across contexts rather than being finished in one unit. Both routes include a core practical programme assessed in the written papers and a separately reported practical endorsement.
Important Topics
- Molecules & MembranesWater, proteins, carbohydrates, lipids and transport across membranes.
- Genes & HealthDNA, protein synthesis, inheritance, gene therapy and genetic screening.
- Cells & DevelopmentMitosis, meiosis, stem cells, differentiation and gene expression.
- Exchange & TransportCirculation, gas exchange, and the mammalian and plant transport systems.
- Energy & EcosystemsPhotosynthesis, respiration, energy flow, succession and climate change.
- Control SystemsHomeostasis, the nervous system, hormones and coordinated responses.
- Core Practicals & StatisticsPractical technique, statistical testing and data interpretation.
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