importance

• temperature

  • ensures optimum conditions maintained for enzymes and cell function
  • if temperature is too high= H+ bonds break and shape of active site changes, no longer complementary
  • no enzyme-substrate complexes forming and enzymes cant catalyse reactions= less efficient metabolic reactions
• blood glucose

  • cells need constant energy in the form of ATP
  • glucose required to supply ATP- monitor blood glucose concentrations
• water

  • amount of water in the blood stream should be constant
  • water is lost during the excretion of waste products
  • kidneys responsible for this regulation