CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ETC
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NADH
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FADH2
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ATP Synthase
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Detailed explanation-1: -NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain. FADH2: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.
Detailed explanation-2: -The NADH and FADH2 are electron carriers that can be used by the electron transport chain (ETC).
Detailed explanation-3: -The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and flavin adenine dinucleotide (FADH2), as well as some ATP. The Krebs cycle occurs in the mitochondrion of a cell (see Figure 6-1).
Detailed explanation-4: -Remember, NADH is a two-electron donor: it donates a hydride ion to a substrate, becoming NAD+. A hydride ion, of course, is just a proton and two electrons. NADH produced in glycolysis and the TCA cycle delivers a pair of electrons to Complex I.
Detailed explanation-5: -The Electron Transport Chain The two FADH2 originate in the citric acid cycle.