Biology was the third most popular A level in 2026, behind only Maths and Psychology, with around 68,000 entries. It is the gateway to medicine, veterinary science and much of healthcare, and it opens up careers in research, conservation, food and the environment. Here is what it involves, where it can take you, and how to tell whether it is right for you.
1. What you actually study
Topics run from the molecular to the global. AQA’s course, for example, covers biological molecules; cells; how organisms exchange substances; genetic information and variation; energy transfers; responses to change; genetics, populations, evolution and ecosystems; and the control of gene expression. Other boards cover similar ground in a different order.
2. Who it suits
Students who are fascinated by living things, enjoy practical work, can learn detailed content, and are willing to apply it to unfamiliar examples. You also need to be comfortable with graphs, statistics and writing precise explanations.
3. GCSE grades you’ll usually need
Typically a grade 6 in GCSE Biology or 6-6 in Combined Science, often with at least a 5 in Maths. Some sixth forms ask for higher. Requirements vary, so check each prospectus.
4. How it’s assessed
Three exam papers at the end of Year 13, whichever board you take. AQA sets three two-hour papers, and Paper 3 includes a 25-mark essay. Edexcel’s Biology A course includes questions on a scientific article released before the exam. There is no coursework, but you complete at least 12 practical activities for the practical endorsement, which is reported separately as Pass or Not Classified. At least 10% of marks test maths.
5. Skills you’ll develop
Laboratory and fieldwork skills, experimental design, data analysis and statistics, scientific writing, evaluating evidence, and the ability to explain complex processes clearly.
6. Subjects it pairs well with
Biology, Chemistry and Maths together keep the most options open, and Physics is useful too. Psychology, Geography and Environmental Science are good partners for life science, health and environmental courses. For medicine, Chemistry is the essential partner: 94% of accepted medicine and dentistry applicants held both Biology and Chemistry.
7. Degrees that require it
Biology and Biomedical Science degrees usually require it. Many medical schools do too: UCL and Nottingham both ask for Biology and Chemistry. Cambridge Medicine, by contrast, requires Chemistry but not Biology. Veterinary science usually requires it, and Liverpool asks for an A in Biology. For dentistry, King’s College London accepts Biology or Chemistry plus another science. Always check the exact course.
8. Degrees where it helps
Biochemistry, Natural Sciences, Pharmacy, Psychology, Sport Science, Physiotherapy, Nursing, Midwifery, Zoology, Environmental Science and Agriculture. Some nursing courses, such as Exeter’s, have no required subjects at all, but Biology gives you a strong head start.
9. Apprenticeships it leads to
Laboratory Technician (Level 3), Laboratory Scientist degree apprenticeship (Level 6), Healthcare Science Practitioner degree apprenticeship (Level 6) and the Registered Nurse degree apprenticeship (Level 6). In each one you earn a salary while you train.
10. Careers it leads to directly
Doctor, vet, dentist, nurse, biomedical scientist, microbiologist, pharmacologist, marine biologist, conservation officer, forensic scientist, laboratory technician and biology teacher. Prospects says employers include the NHS, pharmaceutical and biotech companies, and the water industry.
11. Careers you might not expect
Genetic counsellor, physician associate, radiographer, science journalist, patent attorney, food scientist, environmental consultant, bioinformatician and public health analyst. Biology combined with data skills is especially in demand.
12. Routes that don’t involve university
Pharmaceutical, food, water and NHS laboratory employers recruit school leavers as apprentice technicians, and some progress them to degree level. Search live vacancies on the government’s Find an apprenticeship service. NHS Health Careers also lists healthcare science roles you can enter through work-based training.
13. Common myths
- “There’s no maths.” At least 10% of marks test maths, including statistics.
- “It’s all memorisation.” Exams reward applying knowledge to unfamiliar data and contexts, and AQA includes a 25-mark synoptic essay.
- “Every medical school needs Biology.” Most want it, but Cambridge requires only Chemistry. Check each course.
14. How hard it really is
In 2026, 27.4% of Biology entries got an A* or A, close to the all-subject figure of 28.5%. Many students find the jump in content volume and the precision expected in answers the hardest part. Using exact scientific vocabulary and practising past paper questions from early in Year 12 makes a big difference.
15. Clubs, competitions and wider reading
The British Biology Olympiad, run by the charity UK Biology Competitions, is open to post-16 students. Top scorers win medals, and the best four represent the UK internationally. For medicine, dentistry and vet courses, relevant work experience or volunteering is often expected, so start looking early.
16. Questions to ask at sixth form open evenings
- Which exam board do you use?
- How much practical and fieldwork will I do?
- How do you support students applying for medicine, dentistry or vet science?
- Can I take Biology, Chemistry and Maths together on the timetable?
- Do students enter the Biology Olympiad?
17. Is it right for you? A quick checklist
- I got (or am on track for) a 6 in GCSE Biology or 6-6 in Combined Science.
- I enjoy practical work and finding out how living things work.
- I’m happy handling graphs and basic statistics.
- I can learn detailed content and apply it to new examples.
- I’m interested in healthcare, research or the environment.
If you ticked most of these, A level Biology is worth serious thought.
Find out more
- Ofqual: A level results 2026 at a glance
- Tes: Which A level subjects had the best grades in 2026
- Medical Schools Council: Subject requirements for medicine
- University of Cambridge: Medicine
- Prospects: What can I do with a biology degree?
- NHS Health Careers: Biomedical science
Entry requirements change each year. Always check the latest details with the sixth form, university or employer. Looking at other post-16 options too? Read our guide to V Levels, or browse all our A level subject guides.