18. Reduced NADH is generated at all the following steps except A) When pyruvate
ID: 102070 • Letter: 1
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18. Reduced NADH is generated at all the following steps except A) When pyruvate is decarboxylated in the production of acetyl-CoA. B) The oxidation/reduction steps in Glycolysis C) The formation of ethanol from acetaldehyde D) Oxidation steps in Kreb's Cycle E) NADH is generated in all of the above steps 19. One thing different about the NADH produced in Glycolysis that is not true of NADH produced in the Mitochondrial matrix is: A) NADH in Glycolysis must be transported into mitochondria B) NADH in Glycolysis makes more ATP equilvants than those in the mitochondria C) HADH must be first converted to NADPH D) NADH is never oxidized in the cytoplasm E) None are trueExplanation / Answer
18. Reduced NADH is generated at all the above steps
19. A) NADH in glycolysis must be transported to mitochondria.
Cytosolic NADH cannot cross the inner mitochondrial membrane and enter mitochondria to be reoxidised. However, it can be reoxidised via the glycerol 3-phosphate. This enters mitochondrion.
20. All are true.
Energy liberated by electron transport is used to pump H+ ions out of the mitochondrion to create an electrochemical proton gradient. The protons flow back into the mitochondrion through the ATP synthetase located in the inner mitochondrial membrane, and this drives ATP synthesis. Approximately 3 ATP molecules are synthesized per NADH oxidized and 2 ATP's are synthesized per FADH2 oxidised.
23. B) affecting the rate at which the reactions occur.
24. B) substrate
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