Cambridge (CIE) AS Biology specification (9700)
Understanding the exam specification is key to doing well in your Cambridge (CIE) AS Biology 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 Cambridge (CIE) AS Biology 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 Cambridge (CIE) AS Biology (9700) 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 Cambridge (CIE) specification PDF.
Specification overview
Cambridge International AS Level Biology develops a strong foundation in biological concepts and scientific skills. The course enables learners to understand the structure and function of living organisms, biological processes and the impact of biology on everyday life. Emphasis is placed on practical investigations, data analysis and application of knowledge to new contexts. Students explore key principles such as cell structure, biological molecules, enzymes, genetics and biodiversity, preparing them for further scientific study and research in biological sciences and related disciplines.
Subject content breakdown
1 Cell structure
- Microscopy techniques and calculations
- Prokaryotic vs eukaryotic cells
- Structure and function of organelles
2 Biological molecules
- Carbohydrates, lipids, proteins, water and nucleic acids
- DNA structure and replication
- ATP structure and function
3 Enzymes
- Mode of action and properties
- Factors affecting enzyme activity
- Practical investigations on enzymes
4 Cell membranes and transport
- Structure of membranes (fluid mosaic model)
- Transport mechanisms: diffusion, osmosis, active transport
5 The mitotic cell cycle
- Cell cycle stages and checkpoints
- Mitosis and its significance
- Stem cells and their uses
6 Nucleic acids and protein synthesis
- DNA and RNA structure
- Protein synthesis stages: transcription and translation
7 Transport in plants
- Structure of xylem and phloem
- Mechanisms of water and mineral uptake
- Transpiration and translocation
8 Transport in mammals
- Circulatory system structure and function
- Heart structure, cardiac cycle and ECG
- Blood vessels and their roles
9 Gas exchange
- Gas exchange surfaces in humans and plants
- Mechanisms of ventilation and gas transport
10 Infectious diseases
- Types and transmission of pathogens
- Immune response and vaccination
- Disease prevention and control
11 Immunity
- Immune system components
- Antigen-antibody interactions
- Active and passive immunity
Practical skills
- Planning, implementing, analysing and evaluating experiments
- Use of apparatus and data presentation
Assessment structure
Paper 1 – Multiple Choice
- 1 hour, 40 marks
- 40 multiple choice questions based on AS Level content
- 31% of AS Level
Paper 2 – AS Level Structured Questions
- 1 hour 15 minutes, 60 marks
- Structured questions on AS topics
- 46% of AS Level
Paper 3 – Advanced Practical Skills
- 2 hours, 40 marks
- Practical exam assessing skills like planning, manipulation, observation, and analysis
- 23% of AS Level
Candidates take all three papers in the same exam series for the AS Level award.
Key tips for success
Doing well in your Cambridge (CIE) AS Biology 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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