CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Exit the cell.
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NADH turns into NADPH, FADH turns into FAD
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NADH turns into NAD+, FADH turns into FAD in ETC
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NADH turns into NAD+, FADH turns into FAD in Glycolysis
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Detailed explanation-1: -Although some ATP is generated via the GTP derived from the Krebs cycle, most of the ATP generated during aerobic respiration comes from oxidative phosphorylation. The NADH and FADH generated during the Krebs cycle fuels the electron transport chain which drives this process, ultimately producing 38 molecules of ATP.
Detailed explanation-2: -FADH2 and NADH are created from FAD and NAD+ through reduction-oxidation reactions in the Krebs cycle during respiration as seen below: This cycle gives off small amounts of energy in the form of adenosine triphosphate, or ATP, and produces these compounds, FADH2 and NADH.
Detailed explanation-3: -Coenzymes including FAD and NAD+ are reduced in the Krebs cycle, which transfers electrons by the electron transport chain with oxygen as the final acceptor. Three NADH+ and one FADH2 are generated in one cycle which, on entering the electron transport chain, yields 10 ATP.
Detailed explanation-4: -The oxidation of one molecule of NADH thus leads to the synthesis of three molecules of ATP, whereas the oxidation of FADH2, which enters the electron transport chain at complex II, yields only two ATP molecules.