Two reactions, extra to the ten reactions of glycolysis, are involved in ethanol fermentation by yeast under anaerobic conditions. What is the purpose served by these two reactions in the metabolism of yeast cells?
A) They are required to re-oxidize limited amounts of NADH.
B) They are required to ensure a net oxidation of glucose.
C) They are required to sustain glycolysis, ensuring ATP production.
D) They are required to both ensure a net oxidation of glucose and sustain glycolysis, ensuring ATP production
E) They are required to both re-oxidize limited amounts of NADH and sustain glycolysis, ensuring ATP production
Correct Answer:
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