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  4. At what percent of alcohol concentration does the yeast poison itself to death?

Q. At what percent of alcohol concentration does the yeast poison itself to death?

 2459  208 NTA AbhyasNTA Abhyas 2020Respiration in Plants Report Error

Solution:

Yeast undergoes alcoholic fermentation to releases less energy due to anaerobic respiration. It produces ethyl alcohol as a by-product and releases carbon dioxide. At 13% concentration of alcohol yeast starts poisoning itself. This situation does not occur in aerobic respiration because of oxidation reaction.