Conquer International A-Level Biology
Prepare for International A-Level Biology with practice on molecules, cells, genetics, ecology, and practical techniques.
Content reviewed February 2026 · Aligned to current specifications
About International A-Level Biology
International A-Level Biology provides an in-depth study of living organisms, from molecular biology and cell structure to ecology and evolution. Offered by Cambridge International and Edexcel International, the syllabus covers biological molecules, cells, genetics, biodiversity, physiology and ecosystems, developing both theoretical understanding and practical scientific skills.
The modular examination structure allows students to sit unit exams at multiple points during the year. This means you can complete AS-level units in your first year and A2 units in your second year, with the option to resit individual modules to improve your grade. Practical skills are assessed either through a practical examination or through written questions about experimental design and data analysis.
International A-Level Biology is recognised worldwide as preparation for university courses in biological sciences, medicine, veterinary science, dentistry, pharmacy and many other health and life science disciplines. The qualification develops scientific literacy, analytical reasoning and the ability to evaluate evidence critically.
Topics Covered
Exam Boards
International A-Level Biology is available from these exam boards
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Exam-Style Questions
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Study Tips for Biology
- ✓ Draw and annotate biological diagrams regularly. International A-Level Biology requires detailed knowledge of structures from DNA replication to the nephron, and diagrams are an effective way to memorise and demonstrate this understanding.
- ✓ Learn the precise definitions of key terms. Mark schemes at this level demand exact scientific vocabulary, and vague descriptions will not earn full marks.
- ✓ Practice data analysis questions using unfamiliar datasets. The exam frequently presents data you have not seen before and asks you to apply your knowledge to interpret it.
- ✓ Make links between topics. Understanding how genetics connects to evolution, how cell biology relates to physiology, and how ecology depends on biochemistry shows the depth of understanding that earns top grades.
Exam Tips for International A-Level Biology
- ✓ In essay-style questions, plan your answer and include specific examples with named organisms, studies or processes. Depth of knowledge distinguishes A-grade answers from C-grade answers.
- ✓ For questions on experimental design, always discuss variables (independent, dependent, controlled), sample size, reliability and how results would be analysed.
- ✓ Read the command words carefully. Describe, explain, evaluate and suggest require different approaches and carry different expectations in International A-Level Biology mark schemes.
Frequently Asked Questions
Is International A-Level Biology accepted for medicine? +
What is the difference between International A-Level and UK A-Level Biology? +
How much chemistry is in International A-Level Biology? +
Can I resit modules in International A-Level Biology? +
Useful Resources
Biology at other levels: GCSE Biology · A-Level Biology · iGCSE Biology
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