Skip to content
Back to quiz
6. What is Oxygen debt?
- The amount of oxygen that must flow through muscles to oxidise and remove the lactic acid the has built up
- The amount of oxygen needed to oxidise the CO2 produced in Aerobic respiration
- The amount of Oxygen needed to normalise the Oxygen levels in the blood after exercise
7. What does oxygen oxidise lactic acid into?
- Water and Carbon dioxide
- Water and hydrogen
- Carbon dioxide
- Water
8. What is used in Aerobic respiration that is NOT used in anaerobic?
- Oxygen
- Water
- Carbon Dioxide
- Glucose
9. What is the only reactant during anaerobic respiration?
- Protein
- glucose
- Carbon dioxide
- water
10. Which change does NOT take place during exercise?
- Depth of breathing increases
- Heart rate increases
- Enzymes denature
- Breathing rate increases
11. What do the changes to breathing and heart rate during exercise cause?
- Arteries constrict (stopping blood flowing away from muscles)
- Quicker rate of Gaseous exchange in lungs (so respiration can happen more quickly) and arteries dilate
- Stomach digests food more quickly
- Nerve impulses are sent to brain more quickly
12. What does lactic acid cause?
- increased rate of digestion
- muscle fatigue (muscles stop contracting efficiently and hurt)
- Neutralisation of water in muscles
- Muscles to increase in size