Step-by-step OCR A A Level Biology lessons by topic, building up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Module 1: Development of practical skills in biology

Practical skills assessed in a written examination

Practical skills assessed in the practical endorsement

Module 2: Foundations in biology

Foundations in biology

Module 3: Exchange and transport

Exchange and transport

Module 4: Biodiversity, evolution and disease

Communicable diseases, disease prevention and the immune system

Biodiversity

Module 5: Communication, homeostasis and energy (A-level only)

Communication and homeostasis

Energy for biological processes

Module 6: Genetics, evolution and ecosystems (A-level only)

Genetics and evolution

Cloning and biotechnology

Ecosystems