give one three-carbon intermediate produced at the end of the energy-investment phase of glycolysis. do not abbreviate PLS
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- 2.Assume we start with 1 Glucose molecule. What are the inputs to the payoff phase of glycolysis? a. 2xPyruvate b. 2xGlyceraldehyde-3P c. 1xDihydoxyacetone-P and 1xGlyceraldehyde-3P d. 2xDihydroxyacetone-P12. give one metabolic intermediate that is released as pyruvate is oxidizes by the pyruvate dehydrogenase complex8. Indicate the number of moles each of the molecules below formed from running three moles of glucose through glycolysis and Krebs cycle Moles produced from two moles of glucose running through Glycolysis Moles produced from two moles of glucose being oxidized in the PDC/Krebs Cycle Molecule Produced ATP GTP NADH + H* FADH2 CO2 D Focus United States) W DE DELL F11 F12 F8 F9 F10 F6 FZ (8)
- 1. If glucose was no longer available, lactic acid fermentation activity would: a. decrease b. increase c. remain the same 2. If glucose was no longer available, pyruvate processing activity would: a. decrease b. increase c. remain the same 3. If glucose was no longer available, citric acid cycle activity would: a. decrease b. increase c. remain the same 4. If glucose was no longer available, electron transport activity chain would: a. decrease b. increase c. remain the same 5. Select the correct answer to fill in the blank. If glucose was no longer available, Glycolysis would not produce (__________) to fuel pyruvate processing a. pyruvate b. acetyl-CoA 6. Select the correct answer to fill in the blank. If glucose was no…1. Put together the sequence of components (numbers) that form the glycolysis pathway and the linked reaction. Choose the sequence from the following metabolites. Also mention the step in which NADH/FADH2 is formed along with the number. > Acetyl Co.A > Glucose. > Pyruvate. Fructose – 1, 6-bisphosphate > Glucose – 6 – phosphate. > Phosphoenol – pyruvate. > 1, 3 – Bisphosphoglycerate. > Glyceraldehyde 3-phosphate Fructose – 6 – phosphate > Glycerol 2-phosphate /2-phosphoglycerate. > Dihydroacetone – phosphate. > Glycerol – 3 – phosphate / 3- phosphoglycerate.5. The isomerization of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate is necessary so that the two molecules generated from fructose-1,6-bisphosphate can proceed through the remainder of the glycolysis pathway. Draw a mechanism for this interconversion using generic acid/base catalysts. E-E CH,OH CHO НС—ОН CH2OPO,2- ČH2OPO,2-
- 1. Put together the sequence of components (numbers) that form the glycolysis pathway and the linked reaction. Choose the sequence from the following metabolites. Also mention the step in which NADH/FADH; is formed along with the number. > Acetyl ÇoA > Glucose. > Pyruvate. > Fructose – 1, 6-bisphosphate > Glucose – 6- phosphate. > Phosphoenol – pyruvate. > 1,3– Bisphosphoglycerate. > Glyceraldehyde 3-phosphate Fructose – 6– phosphate > Glycerol 2-phosphate /2-phosphoglycerate. Dihydroacetone – phosphate.3. Trace the course of the radioactive label in 2-[14C] glucose through glycolysis and the citric acid cycle. At what points(s) in the cycle will the radioactivity be released as 14CO2? How many turns of the cycle will be required for complete conversion of the radioactivity to CO2? 4. Repeat problem 3 for pyruvate that is 14C-labeled at its methyl group.2. Which statement about lactate is TRUE? It is produced when NADH levels are low. It is produced when oxygen levels are high. It is produced when ATP levels are high. It is produced when glyceraldehyde-3-phosphate levels are high. It is produced when NAD+ levels are high. 3. In the Krebs cycle, the energy released by taking a compound off Coenzyme A is used to: isomerize citrate decarboxylate isocitrate oxidize carbon make a new carbon-carbon bond. reduce carbon
- 12. Which of the following statement about coenzymes is not correct? The adenosine monophosphate component of NAD+ does not participate in the redox reaction. Ubiquinones such as coenzyme Q can be reduced in two steps involving one electron each. The flavins can transfer or take up electrons in single-electron steps but they are not able to undergo two-electron reductions. The oxidation of glucose is coupled to the generation of both NADH and FADH2. The 2’ hydroxyl group of the AMP portion of NAD+/NADH can be phosphorylated to become NADP+/NADPH.13. How would ATP production in an aerobic yeast culture change if we add the following metabolites or chemicals to the cultivation media? Explain why in each case by citing which enzyme(s) or process(es) would be affected. I Chemical added: Effect: succinyl-CoA ADP Citrate fructose-2,6- bisphosphate DCCD FCCP (none/enhance/ decrease) Reason:11. give one enzyme involves in any of the two oxidative decarboxylation step if the tricarboxylic acid cycle leading to the release of CO2. pls do not abbreviate