OCR A-Level Biology revision

Syllabus coverage

Topics aligned to OCR A-Level Biology. Choose a topic to see explanations, worked examples and exam-style questions.

• Biological Molecules

  • Carbohydrates·
  • Proteins·
  • DNA & RNA

• Cells

  • Cell Membrane & Transport·
  • Cell Cycle & Mitosis (A-Level)

• Exchange & Transport

  • Gas Exchange·
  • Mass Transport: Heart & Blood

• Genetics & Evolution

  • Meiosis & Genetic Variation·
  • Inheritance & Selection

• Energy Transfers

  • Photosynthesis (A-Level)·
  • Respiration (A-Level)

• Organisms & Ecosystems

  • Populations & Sustainability