Exercise and metabolism (B.40)

• Effect of exercise on heart rate during exercise?

  Increase
• effect of exercise on breathing rate and breathing volume during exercise?

  Increase
• Why does heart rate, breathing rate and breathing volume increase during exercise

  supply muscles with more oxygenated blood
• which type of respiration occurs if there is insufficient oxygen available?

  Anaerobic respiration
• two effects of long periods of anaerobic respiration

  Build - up of lattice acid and oxygen debt
• where is lactic acid brown down?(Ht only)

  The liver
• how is lactic acid broken down?

  reacts with oxygen to convert to glucose
• Define 'Oxygen debt'

  Amount of O2 required to break down lactic acid
• How would the lung capacity of an athlete compare to a non-athlete

  larger
• how would the resting heart rate of an athlete compare to a non-athlete

  Lower
• Define "Metabolism"

  Sum of all reactions in a cell/body
• During metabolism, glucose is converted into which three substances?

  1.Starch 2.glycogen 3.cellulose
• During metabolism, lipids are formed from which molecules?

  1 molecule glycerol, 3 molecules fatty acids
• During metabolism, which substances are used for form amino acids?

  glucose and nitrate ions
• two ongoing processes that are part of metabolism

  Respiration and deamination