During Exercise, the Increase in Respiration Rate and Heartbeat Speed

question 44

Multiple Choice

During exercise, the increase in respiration rate and heartbeat speed are driven by the need to replenish the oxygen used to support

• A)lactic acid fermentation.
• B)carbon dioxide synthesis in the lungs.
• C)oxidative phosphorylation in muscle cell mitochondria.
• D)in-the-dark reactions of photosynthesis.

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