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6. If the body is too cold, enzymes:

  • carry on working
  • deactivate
  • denature

7. In haemodialysis, the concentration of toxins is:

  • equal to that of the blood so there is no change
  • very low to increase diffusion of them from the blood into the solution
  • high to draw in more toxins from the blood

8. If a cell is in an isotonic solution, the solute will:

  • remain at an equilibrium
  • move out of the solution and into the cell
  • move out of the cell and into the solution

9. The hormone that causes the release of glucose when blood sugar levels are low is called:

  • glucagon
  • oestrogen
  • insulin
  • ADH

10. If a cell is in a hypertonic solution, the solute will:

  • remain at an equilibrium
  • move out of the solution and into the cell
  • move out of the cell and into the solution

11. Vasodilation is when:

  • arterioles dilate to increase blood flow to skin capillaries, occurring when you are too hot
  • sweat glands produce less sweat, occurring when you are too cold
  • arterioles constrict to decrease blood flow to skin capillaries, occurring when you are too cold
  • sweat glands produce more sweat, occurring when you are too hot

12. Arterioles are:

  • small one cell wide capillaries
  • small arteries connecting main arteries to capillaries
  • the major arteries of the body

13. ADH is released to:

  • target cells in the collecting duct and make them reabsorb water when the body is thirtsy
  • make cells in the nephron stop reabsorbing water so it passes to the bladder to be expelled from the body
  • filter out substances like urea and glucose from the blood

14. Blood sugar levels are monitored by the:

  • stomach
  • appendix
  • pancreas
  • liver

15. If a cell is in a hypotonic solution, the solute will:

  • move out of the cell and into the solution
  • move out of the solution and into the cell
  • remain at an equilibrium

16. Insulin, released when blood sugar levels are too high, causes:

  • sugar to be released in the urine to lower the levels
  • a chain of reactions that convert glucose into glycogen to be stored in the liver/muscles
  • the liver to release glycogen in the form of glucose