ASBiologyOCR3. Exchange & Transport

3. Exchange & Transport (OCR AS Biology)

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3.1 Exchange Surfaces

  1. 3.1.1 Specialised Exchange Surfaces
  2. 3.1.2 Features of Exchange Surfaces
  3. 3.1.3 The Mammalian Gas Exchange System
  4. 3.1.4 Ventilation in Mammals
  5. 3.1.5 Spirometers
  6. 3.1.6 Gas Exchange in Fish & Insects
  7. 3.1.7 Practical: Dissection of Gas Exchange Surfaces in Fish & Insects

3.2 Transport in Animals

  1. 3.2.1 The Need for Transport Systems in Animals
  2. 3.2.2 Circulatory Systems
  3. 3.2.3 Blood Vessels
  4. 3.2.4 Tissue Fluid
  5. 3.2.5 The Mammalian Heart
  6. 3.2.6 Practical: Mammalian Heart Dissection
  7. 3.2.7 The Cardiac Cycle
  8. 3.2.8 Cardiac Output
  9. 3.2.9 Heart Action: Initiation & Control
  10. 3.2.10 Electrocardiograms (ECGs)
  11. 3.2.11 The Role of Haemoglobin
  12. 3.2.12 Adult & Fetal Haemoglobin

3.3 Transport in Plants

  1. 3.3.1 The Need for Transport Systems in Plants
  2. 3.3.2 The Xylem & Phloem
  3. 3.3.3 The Xylem
  4. 3.3.4 The Phloem
  5. 3.3.5 Transverse Sections: Stems, Roots & Leaves
  6. 3.3.6 The Process of Transpiration
  7. 3.3.7 Transpiration in Plants
  8. 3.3.8 Practical: Investigating the Rate of Transpiration
  9. 3.3.9 Translocation
  10. 3.3.10 The Mass Flow Hypothesis
  11. 3.3.11 The Adaptations of Xerophytic & Hydrophytic Plants

3.1 Exchange Surfaces

  1. Multiple Choice Questions
  2. Structured Questions

3.2 Transport in Animals

  1. Multiple Choice Questions
  2. Structured Questions

3.3 Transport in Plants

  1. Multiple Choice Questions
  2. Structured Questions
OCR AS Biology Past Papers