Slow oxidative/Type I muscle fibers would be the predominant fiber recruited during a marathon run because ________.
A. the rate of twitch is faster in Type I than Type II muscle fibers, which will lead to better race performance
B. the greater number of mitochondria present in Type I muscle fiber would provide sustained amounts of ATP for muscle contraction
C. the increased concentration of myosin ATPase would allow for faster hydrolysis of ATP than Type II muscle fibers
D. the small diameter of the muscles would allow someone to perform work for a longer period of time without fatigue
Answer: B
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