Energy Release and Conservation
The amount of ATP produced by a cell from glucose when metabolizing it by fermentation means is

exactly or approximately equal to by aerobic metabolism
greater than by aerobic metabolism
lesser than by aerobic metabolism
none of these

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Energy Release and Conservation
Which of the following best explains about the usefulness of the production of ethanol in yeast cells under anaerobic conditions?

Yeast would be unable to activate the enzymes of the Krebs cycle without ethanol
Ethanol keeps the electron transport system functioning
The process regenerates NAD+, which is required for glycolysis
The process generates oxygen, which is required for glycolysis

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