When You Exercise Intensely, Your Rate of Gas Exchange Rises

question 5

Multiple Choice

When you exercise intensely, your rate of gas exchange rises because

• A)muscle contraction requires oxygen to lessen the amount of ATP produced.
• B)the amount of carbon dioxide required for cellular respiration increases.
• C)the muscle cell mitochondria require more oxygen.
• D)the ratio of surface area to volume of the lungs decreases.

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