CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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twice
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once
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three times<br />
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it does not turn
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Detailed explanation-1: -Note that this cycle runs twice for every molecule of glucose which undergoes oxidation during glycolysis, as two molecules of pyruvate are formed.
Detailed explanation-2: -For one glucose molecules, there will be two rounds of Krebs cycle. This is because two molecules of Pyruvic acid are formed from one molecule of glucose during Glycolysis.
Detailed explanation-3: -Two turns are needed because glycolysis produces two pyruvic acid molecules when it splits glucose.
Detailed explanation-4: -Krebs cycle products This process yields 2 acetyl-CoA molecules to be fed into the cycle. Thus, the cycle proceeds twice per original glucose, yielding twice the products shown below.
Detailed explanation-5: -Results of the Krebs Cycle After the second turn through the Krebs cycle, the original glucose molecule has been broken down completely. All six of its carbon atoms have combined with oxygen to form carbon dioxide.