Body System: Circulatory and Respiratory Questions
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Body System: Circulatory and Respiratory Questions

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Questions and Answers

What is the main purpose of breathing for organisms?

  • To support metabolism by breaking down biomolecules (correct)
  • To release oxygen
  • To release carbon dioxide
  • To generate energy for cellular activities

    • What is the difference between breathing and respiration?

  • Breathing is the exchange of gases while respiration is the mechanical process of oxygen intake.
  • Breathing involves inhalation and exhalation while respiration is the release of carbon dioxide.
  • Breathing is only done by plants while respiration is the process in animals.
  • Breathing is a mechanical process of oxygen intake while respiration is the exchange of gases through inhalation and exhalation. (correct)

    • Which of the following organisms use their skin for breathing?

  • Earthworms (correct)
  • Humans
  • Fish
  • Birds

    • What type of gas exchange system do gills represent?

    <p>Lungs</p> Signup and view all the answers

    Why do some organisms like frogs use their skin for respiration?

    <p>Due to the absence of lungs, relying on the skin for gas exchange</p> Signup and view all the answers

    Why can't arthropods perform cutaneous respiration?

    <p>They have thick exoskeleton that is not adequate to allow gas exchange</p> Signup and view all the answers

    What is the mechanism by which gills extract dissolved oxygen in water?

    <p>Countercurrent exchange</p> Signup and view all the answers

    Which animals have air sacs that provide a large surface for gas exchange?

    <p>Birds</p> Signup and view all the answers

    What is the main function of the nasal cavity in the human respiratory system?

    <p>To filter out particles</p> Signup and view all the answers

    How does the surface area affect gas exchange efficiency in animals?

    <p>Greater surface area enhances gas exchange between blood and tissues</p> Signup and view all the answers

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