Other questions in this quiz

2. Where is haemoglobin found?

  • In the plasma
  • In the blood
  • In the red blood cells
  • In the white blood cells

3. Do red blood cells have a nucleus?

  • Only some
  • No
  • Yes
  • Only the white ones

4. What are valves (in a blood vessel) used for?

  • To direct the flow of blood
  • Transport
  • To stop the blood from flowing
  • Photosynthesis

5. Why are capillaries most efficient at diffusion?

  • There's lots of them
  • Their lumen is really big
  • Their walls are 1 cell thick
  • They're badass

Comments

Emilija

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HELLO

Ciara26

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ybjoby

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What a waste of time

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