An athlete experiences muscle cramps during a high-intensity sprint. Which anaerobic pathway is primarily responsible for regenerating NAD+ in their muscle cells?
Q1. An athlete experiences muscle cramps during a high-intensity sprint. Which anaerobic pathway is primarily responsible for regenerating NAD+ in their muscle cells?
Answer: Lactic acid fermentation
Explanation: Lactic acid fermentation occurs in oxygen-depleted muscle cells; ethanol fermentation is characteristic of yeast rather than human myocytes.