Edexcel International A Level (IAL) Biology specification (YBI11)
Understanding the exam specification is key to doing well in your Edexcel International A Level (IAL) 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 Edexcel International A Level (IAL) 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 Edexcel International A Level (IAL) Biology (YBI11) 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 International Advanced Level in Biology aims to develop students’ knowledge and understanding of biological facts, concepts and principles, and their ability to apply these in both theoretical and practical contexts. It promotes awareness of the importance of biology in explaining natural phenomena and supporting technological development. The course encourages the development of investigative, analytical and evaluative skills through experimentation and data interpretation, preparing students for progression to higher education or employment in biological sciences and related fields. Students gain a broad foundation in cell biology, physiology, genetics, ecology and biological applications, with emphasis on scientific method and ethical considerations.
Subject content breakdown
1. Lifestyle, Transport, Genes and Health
- Structure and function of carbohydrates, lipids and proteins
- DNA structure and genetic inheritance
- Enzyme function and membrane transport
- Cardiovascular disease and risk factors
- Ethical issues around genetic testing and therapy
2. Development, Plants and the Environment
- Cell division and cellular organisation
- Role of stem cells and their applications
- Plant cell structure, transport and adaptations
- Photosynthesis and ecological importance
- Biodiversity and classification, including conservation
3. Practical Biology and Research Skills
- Analysis of experimental methods and results
- Application of practical techniques
- Planning, implementing and evaluating investigations
4. The Natural Environment and Species Survival
- Adaptation and natural selection
- Photosynthesis and energy transfer
- Nutrient cycles and ecosystems
- Evolutionary relationships and biodiversity
5. Energy, Exercise and Coordination
- Respiration and energy systems in the body
- Muscle structure and movement
- Nervous system and synaptic transmission
- Hormonal coordination and homeostasis
- Effects of exercise on body systems
6. Practical Biology and Investigative Skills
- Designing experiments and data analysis
- Critical evaluation of methodology
- Drawing conclusions from evidence
Assessment structure
Unit 1: Lifestyle, Transport, Genes and Health
- Written exam: 1 hour 30 minutes
- 80 marks
- Objective questions, short and long answer questions
Unit 2: Development, Plants and the Environment
- Written exam: 1 hour 30 minutes
- 80 marks
- Objective questions, short and long answer questions
Unit 3: Practical Biology and Research Skills
- Written exam: 1 hour 20 minutes
- 50 marks
- Based on experimental and investigative techniques
Unit 4: The Natural Environment and Species Survival
- Written exam: 1 hour 45 minutes
- 90 marks
- Questions include data analysis and extended response
Unit 5: Energy, Exercise and Coordination
- Written exam: 1 hour 45 minutes
- 90 marks
- Includes synoptic questions covering Units 1–4
Unit 6: Practical Biology and Investigative Skills
- Written exam: 1 hour 20 minutes
- 50 marks
Focus on planning, analysis and evaluation of investigations
- Assessment availability: January and June
- IAS awarded after Units 1–3; IAL awarded after completion of all six units
- Grading: A–E for IAS; A*–E for IAL
Key tips for success
Doing well in your Edexcel International A Level (IAL) 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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