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HSC Biology

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  1. Module 1: Cells as the Basis of Life
    Cell Structure
  2. Cell Function
    4 Topics
  3. Module 2: Organisation of Living Things
    Organisation of Cells
    2 Topics
  4. Nutrient and Gas Requirements
    6 Topics
  5. Transport
    2 Topics
  6. Module 3: Biological Diversity
    Effects of the Environment on Organisms
    2 Topics
  7. Adaptations
  8. Theory of Evolution by Natural Selection
  9. Evolution - the Evidence
  10. Module 4: Ecosystem Dynamics
    Population Dynamics
  11. Past Ecosystems
  12. Future Ecosystems
  13. Module 5: Heredity
    Reproduction
  14. Cell Replication
  15. DNA and Polypeptide Synthesis
  16. Genetic Variation
  17. Inheritance Patterns in a Population
  18. Module 6: Genetic Change
    Mutation
    1 Topic
  19. Biotechnology
  20. Genetic Technologies
  21. Module 7: Infectious Disease
    Causes of Infectious Disease
  22. Responses to Pathogens
  23. Immunity
  24. Prevention, Treatment and Control
  25. Module 8: Non-infectious Disease and Disorders
    Homeostasis
  26. Causes and Effects
  27. Epidemiology
  28. Prevention
  29. Technologies and Disorders
HSC Biology Transport Respiratory, Circulatory and Excretory Systems
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Lesson 5, Topic 2
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Respiratory, Circulatory and Excretory Systems

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Similarities

  • All closed systems; involving ducts, tubes and containers
  • Controlled systems; all act to maintain homeostasis
    • Homeostasis: The ability to maintain internal stability in organisms
  • Each system transports fluids

Differences

Respiratory SystemCirculatory SystemExcretory System
– Below pump
– Involves air/fluid
– Transports gas
– Exchanges gas
– Situated in the upper body		– Involves pump
– Involves fluid plasma
– Transports cells
– Exchanges nutrients
– Situated throughout the body		– Pressure
– Involves fluid (urea)
– Situated in the lower body
– Sweat