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

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

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Energy Release and Conservation
Organisms can synthesize ATP by oxidative phosphorylation when they

oxidize glucose to pyruvate
pass electrons from the oxidation of chlorophyll through an electron transport system
ferment
pass electrons to oxygen through an electron transport system containing cytochromes

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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?

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

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