hard · MCAT
A 22-year-old athlete is sprinting a 100-meter dash. During this high-intensity burst, their muscle cells rely heavily on anaerobic glycolysis.
Which of the following best describes the metabolic necessity of converting pyruvate to lactate in this scenario?
- To produce additional ATP molecules through the reduction of pyruvate.
- To decrease the intracellular pH and activate phosphofructokinase-1.
- To regenerate NAD⁺ from NADH to allow glycolysis to continue.
- To transport pyruvate into the mitochondrial matrix for the Citric Acid Cycle.
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