Multiple Choice
As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing:
A) only cellular respiration for maximum ATP production.
B) only oxygen for maximum ATP production.
C) some lactate fermentation.
D) both cellular respiration and oxygen for maximum ATP production.
Correct Answer:

Verified
Correct Answer:
Verified
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