Edexcel A Level Biology (A) SNAB specification (9BN0)
Understanding the exam specification is key to doing well in your Edexcel A Level Biology (A) SNAB exam. It lays out exactly what you need to learn, how you'll be assessed, and what skills the examiners seek. Whether you're working through the course for the first time or revising for your final exams, the specification helps you stay focused and confident in your preparation.
We've included helpful revision tools to support you in putting the specification into practice. Wherever you're starting from, you'll find everything you need to feel prepared, from the official specification to high-quality resources designed to help you succeed.
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In the next section, you'll find a simplified summary of the official Edexcel A Level Biology (A) SNAB specification, along with a breakdown of key topics, assessment structure, and useful study resources. We've also included links to topic-level guides and revision tools to help you put the specification into practice.
Contents
Disclaimer
This page includes a summary of the official Edexcel A Level Biology (A) SNAB (9BN0) specification, provided to support your revision. While we've made every effort to ensure accuracy, Save My Exams is not affiliated with the awarding body.
For the most complete and up-to-date information, we strongly recommend consulting the official Edexcel specification PDF.
Specification overview
The Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) aims to provide students with a robust understanding of biological concepts, focusing on the integration of scientific methods, practical skills, and real-world applications. The qualification is designed for learners intending to pursue further studies in biological sciences or related fields. It develops essential knowledge of different biological areas, deepens appreciation for scientific methods, encourages enthusiasm for the subject, and fosters the ability to apply knowledge to societal issues and decision-making. The Salters-Nuffield approach connects biological theory to practical experience, with a strong emphasis on experimental work and its relevance to everyday life and global challenges.
Subject content breakdown
Topic 1: Lifestyle, Health and Risk
- Circulatory system and cardiovascular disease
- Lipids, carbohydrates and energy
- Risk factors and statistical interpretation
- Ethical considerations in biological research
Topic 2: Genes and Health
- Cell membranes and transport
- DNA, RNA, protein synthesis
- Inheritance and genetic disorders
- Genetic screening and ethics
Topic 3: Voice of the Genome
- Cell ultrastructure and division
- Stem cells, gene expression and differentiation
- Epigenetics and environmental influences
Topic 4: Biodiversity and Natural Resources
- Adaptation, classification, and evolution
- Plant structure and function
- Sustainability and conservation
Topic 5: On the Wild Side
- Ecosystems and succession
- Photosynthesis and productivity
- Climate change and environmental impact
Topic 6: Immunity, Infection and Forensics
- Forensic pathology and infection mechanisms
- Immune responses and antibiotics
- Disease transmission and prevention
Topic 7: Run for your Life
- Muscles, respiration and circulation
- Homeostasis and performance
- Medical technology and ethics in sport
Topic 8: Grey Matter
- Nervous system and brain function
- Visual development and learning
- Neurochemistry and genetic modification
Science Practical Endorsement
- 18 core practicals embedded across topics
- Development of practical and analytical skills
- Teacher-assessed and externally monitored
Assessment structure
Paper 1: The Natural Environment and Species Survival
- 2 hours, 100 marks
- Covers Topics 1–6
- Includes multiple-choice, short/open-response, calculations, extended writing
- Minimum 10% maths content, practical method questions
Paper 2: Energy, Exercise and Co-ordination
- 2 hours, 100 marks
- Covers Topics 1–4, 7–8
- Similar structure to Paper 1 with focus on later topics
Paper 3: General and Practical Applications in Biology
- 2 hours, 100 marks
- Covers Topics 1–8
- Includes synoptic questions, practical analysis, pre-released scientific article
Science Practical Endorsement
- Internally assessed, reported separately as pass/fail
- Minimum 12 assessed practicals covering all techniques
- Evidence based on Common Practical Assessment Criteria (CPAC)
Key tips for success
Doing well in your Edexcel A Level Biology (A) SNAB isn't just about how much you study, but how you study. Here are a few proven tips to help you stay on track
- Start with a clear plan: Break the subject into topics and create a revision schedule that allows enough time for each. Start early to avoid last-minute stress.
- Focus on understanding, not memorising: Use our revision notes to build a strong foundation in each topic, making sure you actually understand the material.
- Practise regularly: Attempt past papers to familiarise yourself with the exam format and timing. Mark your answers to see how close you are to full marks.
- Be strategic with your revision: Use exam questions by topic to focus on weaker areas, and flashcards to reinforce important facts and terminology.
- Learn from mistakes: Whether it's from mock exams or practice questions, spend time reviewing what went wrong and why. This helps prevent repeat mistakes in the real exam.
- Stay balanced: Don't forget to take regular breaks, eat well, and get enough sleep, a healthy routine makes revision much more effective.
With the right approach and consistent practice, you'll build confidence and improve your chances of exam success.
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