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OCR A Level Biology

Syllabus H420 · Version 4.1 (April 2026), for first assessment in 2025 · sourced from OCR – official A Level Biology A (H420) specification PDF, Version 4.1, April 2026, verified 2026-09-02.

  1. 1. Development of practical skills in biology

    • 1.1 Practical skills assessed in a written examination
    • 1.2 Practical skills assessed in the practical endorsement

  2. 2. Foundations in biology

    • 2.1.1 Cell structure
    • 2.1.2 Biological molecules
    • 2.1.3 Nucleotides and nucleic acids

  3. 3. Exchange and transport

    Subtopics for this topic are not listed here yet; check the official document for the full content.

  4. 4. Biodiversity, evolution and disease

    Subtopics for this topic are not listed here yet; check the official document for the full content.

  5. 5. Communication, homeostasis and energy

    Subtopics for this topic are not listed here yet; check the official document for the full content.

  6. 6. Genetics, evolution and ecosystems

    Subtopics for this topic are not listed here yet; check the official document for the full content.