When an organism such as a yeast lives by fermentation, it converts the pyruvate from glycolysis into a different compound, such as alcohol. Why doesn't it secrete the pyruvate directly?
A) The conversion yields 32 ATP per pyruvate molecule.
B) The conversion yields one NADH per pyruvate molecule.
C) The conversion is needed to regenerate the molecules needed for glycolysis.
D) A buildup of pyruvate in the surrounding environment would be too toxic.
Correct Answer:
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