B2.6.2 Anaerobic respiration Flashcards
Which substance do muscle store glucose as?
Glycogen.
What happens to the stored glucose in muscle during exercise?
Converts glycogen to glucose.
Why do muscles carry out anaerobic respiration?
If too little oxygen is reaching them during exercise.
How does the breakdown of glucose differ in anaerobic and aerobic respiration?
Anaerobic respiration is the incomplete breakdown of glucose.
What is the product of anaerobic respiration?
Lactic acid.
How does the amount of energy produced differ in aerobic and anaerobic respiration?
Less is produced in anaerobic respiration.
How is oxygen debt produced by anaerobic respiration repaid?
Lactic acid is oxidised(using oxygen) to carbon dioxide and water.
Why do muscles become fatigued?
If they are subjected to long periods of vigorous activity.
What does ‘fatigued’ mean?
Muscles stop contracting efficiently.
What is one of the causes of muscle fatigue?
The build-up of lactic acid.
What is fermentation?
The anaerobic respiration in yeast it produces ethanol and carbon dioxide.
