BI-2250
Oxygen debt
Biology · Secondary 4 · Medium · Oxygen debt
A person runs a 400 m sprint and then stops suddenly. He breathes heavily for several minutes after the race. Which statement best explains why this happens in terms of oxygen debt?
- Extra oxygen is needed to break down lactic acid formed during the sprint.
- Extra oxygen is needed to make more carbon dioxide in the blood.
- Heavy breathing cools the body by removing excess oxygen.
- Heavy breathing stops aerobic respiration so muscles can rest.
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