Edexcel A-Level Biology
Pearson Edexcel offers two A-level Biology courses: Biology A (Salters-Nuffield) and Biology B. Both develop biological understanding, practical skills and the interpretation of scientific evidence, but organise the content differently.
Choose your Edexcel A-level Biology course
Check whether you study Biology A (Salters-Nuffield) or Biology B before opening the syllabus.
Edexcel A-level Biology A (Salters-Nuffield) — 9BN0
9BN0
Study Biology A (9BN0), the Salters-Nuffield course. Its eight topics connect biological principles with health, biodiversity, environmental and physiological contexts.
Edexcel A-level Biology B - 9BI0
9BI0
Study Biology B (9BI0) through ten topics, covering molecular and cellular biology, organisms, genetics, physiology and ecosystems.
Biology A uses qualification code 9BN0. Biology B uses 9BI0. Choose the course taught by your school.
Biology A: Salters-Nuffield
Biology A connects biological ideas with contexts such as health, biodiversity and the environment. Its eight topics extend from molecules and genes to ecology, physiology and the nervous system.
Biology B
Biology B organises content into ten topics, including molecules, cells, classification, exchange and transport, energy processes, microbiology, genetics, control systems and ecosystems.
Assessment and practical work
Both courses have three written examinations and a separately reported Science Practical Endorsement. Practical skills and data interpretation also appear in the written papers.
Official course information
See Pearson's specifications for Biology A (9BN0) and Biology B (9BI0) for the requirements of each course.