Question

The leg muscles of a sprinter would differ from a marathon runner in that ________. The leg muscles of a sprinter would differ from a marathon runner in that ________. per gram, the sprinter's muscles would have more mitochondria than the marathon runner's muscles the marathon runner's muscles would have a greater rate of contraction than the sprinter's muscles per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles per gram, the sprinter's muscles would use more oxygen than the marathon runner's muscles

Answer 1

Answer:

The correct answer is - per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles.

Explanation:

Marathon runners have smaller leg muscles and thinner quads and calves as marathon runners require slow-twitch muscles while in sprinters the fast-twitch muscle requires. Slow-twitch muscles of marathon runners have more amount of myoglobin, per gram than fast-twitch muscles.

Myoglobin acts as local oxygen storage that provides oxygen to the muscles in case of less oxygen supply than required temporarily and a marathon race is an intense exercise or activity that requires more oxygen.