How do the muscles of a sprinter running the 400-yard dash in 50 seconds receive most of their energy?
A) The aerobic respiration of fatty acids
B) The breakdown of creatine phosphate
C) The anaerobic respiration of glucose
D) The aerobic respiration of glucose

Question

Quizplus · Accepted Answer

Sprinting requires a burst of energy that is primarily supplied by anaerobic respiration of glucose. This process requires less oxygen and produces ATP quickly, but only for a short period of time. Therefore, the muscles of a sprinter running the 400-yard dash in 50 seconds receive most of their energy through the anaerobic respiration of glucose. The breakdown of creatine phosphate can also provide a quick burst of energy, but it is limited and quickly depleted. The aerobic respiration of glucose and fatty acids require more oxygen and are better suited for endurance activities.

How Do the Muscles of a Sprinter Running the 400-Yard