Yeast Will Normally Convert Pyruvate to Ethanol

question 3

Multiple Choice

Yeast will normally convert pyruvate to ethanol.Why is this better for the yeast than a conversion to lactate?

• A)Conversion to ethanol releases more NAD+ per mole than the conversion to lactate.
• B)The carbon atoms are more oxidized in ethanol than in lactate.
• C)Ethanol is neutral,but lactate production is accompanied by a sharp decrease in pH.
• D)Ethanol production is not better.Yeast normally produces ethanol and lactate in equimolar amounts.

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