Which of the following is true regarding the oxidation of 1 molecule of palmitate to 8 molecules of acetyl CoA by the beta-oxidation pathway? 7 molecules of FADH2 are formed None of the above 8 molecules of FADH2 are formed 8 molecules of NADH are formed BOTH 8 molecules of NADH are formed AND 8 molecules of FADH2 are formed
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Which of the following is true regarding the oxidation of 1 molecule of palmitate to 8 molecules of acetyl CoA by the beta-oxidation pathway?
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- What is incorrect in the diagram shown below? Mall-com Thiolysis SCOA + H₂S-Co COA Acetyl CoA Acetyl CoA H₂C The products should be acetyl CoA and propionyl CoA. Sulfur should not be present in any molecular structure. Acyl group cleavage occurs in a different step of the B-oxidation pathway. The B-oxidation pathway directly generates ATP, which is not shown here.Which of the following statements is TRUE about cholesterol biosynthesis? O NADH is needed to form mevalonate. O HMG-CoA lyase catalyzes the committed step. Six molecules of isopentyl pyrophosphate condense to form squalene. O Cholesterol is composed of 30 carbon atoms.Below is an image of the Krebs cycle: acetyl-CoA oxaloacetate COASH H20 NADH NAD* H20 malate citrate fumarate isocitrate FADH2 NAD* CO2 FAD АТР NADH + ADP succinate GTP NAD+ a-ketoglutarate H20 GDP NADH + CO2 COASH succinyl CoA COASH Consider the conversion of succinate to fumarate, which is coupled with the production the electron carrier FADH2. If this reaction was NOT coupled with the production of FADH2 (and only catalyzed the conversion of succinate to fumarate), how would this impact ATP production through cell respiration? OATP production would stop because no high energy electron carriers would be produced ATP production would still occur, but there would be a much lower ATP yield because a large number of electron carriers are no longer being made ATP production would stop because without FADH2 we will no longer have electrons moving through the electron transport chain ATP production would still occur, but there would be a slightly lower ATP yield because a small number of…
- Which of the following statements is TRUE about cholesterol biosynthesis? Group of answer choices HMG-CoA lyase catalyzes the committed step. Cholesterol is composed of 30 carbon atoms. NADH is needed to form mevalonate. Six molecules of isopentyl pyrophosphate condense to form squalene.Which of the following statements is/are TRUE for the Krebs' cycle? Reaction 1: condensation of acetyl-CoA and oxaloacetate; produces H20. Reaction 3: oxidation of isocitrate to a-ketoglutarate; produces NADH and CO2. Reaction 6: oxidation of succinate to fumarate; produces FADH2 and CO2 Reaction 5: hydrolysis of succinyl-CoA to succinate; produces ATP.Which enzyme is used for both the synthesis and breakdown of acetoacetate? thiolase O HMG-CoA synthase OB-hydroxybutyrate dehydrogenase O B-Ketoacyl-CoA transferase
- In beta-oxidation, which cofactor is required the for second oxidation reaction (conversion of beta-hydroxyacyl-CoA to beta-ketoacyl-CoA)? NAD+ water FAD CoA-SHWhich of the following statements is TRUE about cholesterol biosynthesis? O NADPH is needed to form mevalonate. O Cholesterol is composed of 30 carbon atoms. HMG-CoA lyase catalyzes the committed step. Five molecules of isopentyl pyrophosphate condense to form squalene.In the first step of the TCA cycle the acetyl group of acetyl-CoA is transferred to oxaloacetate to produce citrate. Where will the carbonyl carbon of that acetyl group be after the first CO2 is expelled? Group of answer choices The first carbon of α-ketoglutarate The last carbon of α-ketoglutarate The fourth carbon of α-ketoglutarate The third carbon of α-ketoglutarate
- In order to break the carbon-carbon bond of Acetyl-CoA in a way that does not harm the cell, citrate is produced in the TCA cycle. Explain how switching between 6-carbon, 5-carbon and 4-carbon metabolites eventually allows the two carbons of Acetyl-CoA to be converted to CO2 in a way that does not harm the cell.Which enzyme in ß-oxidation extracts two electrons from the fatty acid, resulting in the eventual generation of 1.5 ATP each time that it catalyzes a reaction? O Acyl-CoA dehydrogenase O succinate dehydrogenase O L-hydroxyacyl-CoA dehydrogenase O Enoyl-CoA hydrataseYeasts and plants can use acetyl-CoA as a carbon source by omitting which two steps in the TCA cycle? O Citrate isocitrate; isocitrate → a-ketoglutarate O Isocitrate → a-ketoglutarate; a -ketoglutarate → succinyl-CoA - O Oxaloacetate citrate; malate → oxaloacetate O Succinyl-CoA succinate; succinate → fumarate