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6. Which type of blood vessel has thick walls containing muscle and elastic tissue?

  • veins
  • arteries
  • capillaries

7. Which of these is NOT a method to treat Type 1 diabetes (when the pancreas produces little or no insulin)?

  • using adult stem cells/embryonic stem cells/genetically engineered pancreas cells
  • Injections of insulin (produced by genetically engineered bacteria
  • careful attention to diet
  • controlling the blood glucose levels with hormones
  • Transplanting pancreas cells

8. which type of blood vessel are narrow, thin walled and allow the exchange of substances with body cells?

  • the capillaries
  • the veins
  • the arteries

9. Which type of blood vessel has thin walls, a large lumen and valves to prevent backflow?

  • the veins
  • the capillaries
  • the artereis

10. What is the transpiration stream?

  • the loss of water vapour from the plant
  • the diffusion of gases
  • the movement of water through the plant
  • the uptake of water through the roots

11. How does gas diffuse in and out of leaves?

  • by transpiration
  • through tiny holes called stomata
  • through the guard cells
  • through root hair cells

12. What are white blood cells?

  • fragments of cells which clot at the site of the wound
  • part of the body's defence system to fight microoganisms
  • bio-concave discs, with no nucleus, with carry oxyhaemoglobin
  • fluid to transport cells, and other substances such as solutes, urea and CO2

13. which type of sports drink matches the body fluids?

  • hypertonic
  • isotonic
  • hyptonic

14. What is urea?

  • breakdown of amino acids, produced by the kidneys
  • the breakdown of amino acids, made in the liver
  • useful substances in the patients blood ie, glucose and mineral ions
  • soluble products of digestion

15. Which of these is NOT a key feature of a good exchange surface?

  • Aveoli are surround by capillaries
  • a good blood supply
  • thin walls or membrane for a short diffusion path
  • large surface area to volume ratio

16. Sports drinks contain water to...

  • make the cells work efficiently
  • replace water lost when sweating and rehydrate body cells
  • to replace mineral ions lost when sweating
  • to replace sugar used for energy release

17. What are stents used for?

  • to increase blood volume
  • to replace the heart
  • to keeps blood vessels, eg. the coronary arteries if they have become blocked due to fatty deposits
  • the replace damaged valves to prevent backflow

18. What are platelets?

  • bio-concave discs, with no nucleus, with carry oxyhaemoglobin
  • part of the body's defence system to fight microoganisms
  • fragments of cells which clot at the site of the wound
  • fluid to transport cells, and other substances such as solutes, urea and CO2

19. Which of these does NOT happen when we breathe in?

  • the diaphragm flattens
  • the volume of the thorax increases
  • the ribcage moves up and out
  • the pressure in the chest increase
  • the intercostal muscles contract

20. Which of these is NOT a feature of dialysis?

  • Immunosuppressants have to be taken to stop the body rejecting proteins on the surface of kidney, called antignes
  • the dialysis fluid contains the same amount of useful substances, so that only urea diffuses out
  • restores the concentration of substance in the blood
  • needs to carried out at regular intervals for long periods oof time