We Breathe More Quickly and Deeply When We Exercise

question 71

Multiple Choice

We breathe more quickly and deeply when we exercise. Why does this make sense?

• A)Because when we exercise, we consume more CO₂ and must increase ventilation to supply the CO₂.
• B)Because when we exercise, we use more ATP, and additional O₂ is necessary to generate sufficient ATP.
• C)Because when we exercise, we hydrolyze more ATP to ADP and P_i, and O₂ is necessary for the hydrolysis, so we increase our intake of oxygen.
• D)Because when we exercise, we produce more CO₂ and increased ventilation is necessary to rid ourselves of CO₂.