Biology B3 - Exchange of materials

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  • Created by: Caitlanbc
  • Created on: 17-04-16 19:40

1. Which of these things doesnt happen when we breathe in?

  • Thorax volume decreases
  • Thorax volume increases
  • Intercostal muslces and diaphragm contract
  • Pressure decreases
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2. In more complex organisms, exchanging substances gets...

  • Pretty weird
  • Kinda crazy
  • More difficult
  • Tonnes easier

3. Xylem tubes are made of dead cells and Phloem tubes are made from living cells. True or False?

  • True
  • False

4. Where are the Villi?

  • The heart
  • The lungs
  • The small intestine
  • The gut

5. Which of these is not a way exchange surfaces are adapted to maximise effectiveness?

  • They are thin
  • Large surface area
  • Lots of mitochondria
  • Lots of blood vessels nearby

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