Addition of more myoglobin to a muscle fiber would have the largest effect on ________.
A) fast oxidative and slow oxidative fibers
B) fast glycolytic and fast oxidative fibers
C) fast glycolytic fibers only
D) fast oxidative fibers only

Question

Quizplus · Accepted Answer

Myoglobin enhances the oxygen storage capacity of muscle fibers, which is particularly beneficial for oxidative metabolism. Both fast oxidative and slow oxidative fibers rely heavily on aerobic respiration, making them the most affected by increased myoglobin. Fast glycolytic fibers primarily use anaerobic glycolysis, which does not directly benefit from myoglobin's oxygen storage.

Addition of More Myoglobin to a Muscle Fiber Would Have