9. Muscle cells
must produce NAD+ as an end product of lactate fermentation so that glycolysis
can continue to make a few ATP molecules.
NAD+ is needed as raw material during
one of the intermediate steps of glycolysis. It accepts the energized electrons
and hyrogen ions from the original glucose in steps which occur before any ATP
is produced. If NAD+ is present, glycolysis continues to make ATP. If NAD+ isn't
present, glycolysis shuts down and the muscle cell loses its source of ATP and
would soon die!
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Slichter