Marathon runners often complete their events between 4 and 5 hours. Throughout the majority of this endurance event, which process is producing ATP?
A) anaerobic respiration
B) aerobic respiration
C) glycolysis fermentation
D) creatine phosphate reaction

Question

Quizplus · Accepted Answer

The majority of the energy production during a marathon will come from aerobic respiration, which uses oxygen to generate ATP. This is because aerobic respiration can produce ATP for sustained periods of time, whereas anaerobic respiration and glycolysis fermentation can only produce ATP for short bursts of energy. The creatine phosphate reaction can also produce ATP but only for a few seconds and is not sustainable for the duration of a marathon.

Marathon Runners Often Complete Their Events Between 4 and 5