Shot-putters competing in track and field events need short, intense bursts of energy, but find that they are quickly fatigued by the activity. An examination of the muscles used in this sport would show that they
A) have substantial reserves of fuel.
B) have low levels of ATPase activity.
C) are well-supplied with blood vessels.
D) have relatively few mitochondria.
E) develop tension quickly.

Question

Quizplus · Accepted Answer

Shot-putters require short, intense bursts of energy, which are primarily provided by anaerobic glycolysis, a process that occurs in the cytoplasm and does not require oxygen or mitochondria. Therefore, the muscles used in this sport have relatively few mitochondria, which are responsible for aerobic energy production in the presence of oxygen.

Shot-Putters Competing in Track and Field Events Need Short, Intense