CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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From one glucose molecule, the number of ATP molecules produced out of Krebs Cycle is:
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2
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3
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4
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0
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Explanation:
Detailed explanation-1: -Oxidation of one molecule of glucose molecule during cellular respiration generates 38 ATP molecules-2 from glycolysis, 2 from Krebs cycle, and 34 from the electron transport system.
Detailed explanation-2: -The net energy output for one glucose molecule from glycolysis through the Krebs cycle is: 4 ATP, 10 NADH + H+, and 2 FADH2.
Detailed explanation-3: -4 ATP (including 2 from glycolysis)
Detailed explanation-4: -Because for each glucose molecule there are two pyruvic acid molecules entering the system, two ATP molecules are formed. Also during the Krebs cycle, the two carbon atoms of acetyl-CoA are released, and each forms a carbon dioxide molecule.
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