Unit 3

Unit 3

Area of study 1: Molecules of life

  • Biomacromolecules
    • Nucleic acids
      • DNA
      • RNA
    • Proteins
    • Lipids
    • Carbohydrates
  • Nature of the plasma membrane
  • Cellular organelles
  • Biochemical reactions
    • The role of ATP and ADP
    • Enzymes
    • Cellular respiration
    • Photosynthesis

Area of study 2: Detecting and responding

  • Maintaining homeostasis
    • Nervous System
    • Endocrine System
    • Signal transduction
    • Signalling molecules
    • Comparison between the nervous system and endocrine system
    • Feedback mechanisms
    • Apoptosis
  • Human immune system
    • Antigens and their role in disease
    • Lines of defence
      • First line of defence
      • Second line of defence
      • Third line of defence: Humoral immunity
      • Third line of defence: Cell-mediated immunity
    • Lymphatic system
    • Disorders of the immune response
    • Immunity