When an Individual Is Exercising Heavily and When the Muscle

Multiple Choice

When an individual is exercising heavily and when the muscle becomes oxygen-deprived, muscle cells convert pyruvate to lactate. What happens to the lactate in skeletal muscle cells?

A) It is converted to NAD⁺.
B) It produces CO₂ and water.
C) It is taken to the liver and converted back to pyruvate.
D) It reduces FADH₂ to FAD⁺.
E) It is converted to alcohol.