Transport and Transport Systems

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  • Created by: riana1705
  • Created on: 03-05-16 18:51

1. Which of these is NOT an adaptation of alveoli?

  • A good blood supply.
  • A large surface area.
  • Very thick walls to protect themselves from high pressure.
  • Most lining for dissolving gases.
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2. Where is active transport most likely to happen?

  • In the lungs, when blood is being oxygenated.
  • In the brain, when neurones are travelling the wrong way.
  • In the digestive system, when nutrients should be taken to the blood.
  • At the gym.

3. Which of these is NOT an adaptation for an exchange surface?

  • Having a small surface area.
  • Lots of blood vessels.
  • Good ventilation.
  • Being very thin.

4. What is the job of the lungs?

  • To thin the blood.
  • To add oxygen and nitrogen from the air into the blood.
  • To transfer oxygen into the blood and remove waste carbon dioxide.
  • To add carbon dioxide to the blood.

5. What is inside the lungs?

  • Alveoli - air sacs for gas exchange.
  • Air - for breathing.
  • Capillaries - to carry the blood.
  • Villi - for gas exchange.

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