What type of fermentation occurs in yeast?

Alcoholic fermentation, otherwise known as ethanol fermentation, is an anaerobic process that drives the release of cellular energy by converting biological fuels, such as sugars, into ethanol and carbon dioxide. The microorganisms that carry out alcoholic fermentation are unicellular eukaryotic fungi called yeasts so this would be your answer.

They can measure  the amount of energy gained or lost

c. electrical charges of ionic bonds.

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