World-class sprinters typically do not breathe during the 9+ seconds it takes to complete a 100-meter race.What does this fact suggest about these runners' energy production? A) It must be mitochondrial,with oxygen provided by one big breath at the beginning of the sprint. B) It must be mitochondrial,with oxygen provided by circulating hemoglobin that is already saturated with oxygen. C) It must be glycolytic;the process is entirely anaerobic and the race will be over before NADH⁺ reserves are depleted. D) It must be fermentative,which explains why most sprinters experience cramping after the race ends.

Question

Quizplus · Accepted Answer

Since world-class sprinters do not breathe during the race, it suggests that their energy production must be glycolytic, which is an anaerobic process that does not require oxygen. This means that their bodies are relying on stored ATP and glucose to provide energy for the sprint, and the race will be over before their NADH and FADH2 reserves are depleted.

World-Class Sprinters Typically Do Not Breathe During the 9+ Seconds