Addition of more myoglobin to a muscle fiber would have the largest effect on ________.

Question

Quizplus · Accepted Answer

Myoglobin is a protein that binds oxygen within muscle cells, facilitating oxygen delivery to mitochondria for aerobic respiration. Fast oxidative and slow oxidative fibers rely more on aerobic respiration than fast glycolytic fibers, which primarily use anaerobic glycolysis. Therefore, adding more myoglobin would most benefit fast oxidative and slow oxidative fibers by enhancing their oxygen storage and delivery capacity, supporting their aerobic activities.

Addition of More Myoglobin to a Muscle Fiber Would Have