When an Organism Such as a Yeast Lives by Fermentation

question 3

Multiple Choice

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 1 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.

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