Which of the following enzymes consumes one molecule of NADH, during anaerobic fermentation in yeast, as it converts a two-carbon substrate molecule into a two-carbon product molecule? succinate dehydrogenase pyruvate decarboxylase C. isocitrate dehydrogenase lactate dehydrogenase alcohol dehydrogenase
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Which of the following enzymes consumes one molecule of NADH, during anaerobic fermentation in yeast, as it converts a two-carbon substrate molecule into a two-carbon product molecule?
- succinate dehydrogenase
- pyruvate decarboxylase
- C. isocitrate dehydrogenase
- lactate dehydrogenase
- alcohol dehydrogenase
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- Which of the following enzymes consumes one molecule of NADH, during anaerobic fermentation in humans, as it converts a three-carbon substrate molecule into a three-carbon product molecule? succinate dehydrogenase pyruvate decarboxylase C. isocitrate dehydrogenase lactate dehydrogenase alcohol dehydrogenaseWhich of the following events does not occur during Krebs Cycle? Citrate synthase catalyzers the transfer of an acetyl group from acetyl coenzyme A to oxaloacetate to form citrate. Isocitrate dehydrogenase converts citrate to its isomer isocitrate. A carbon dioxide is released when alpha-ketoglutarate is oxidized to succinyl coenzyme A. The energy released from the conversion of succinyl coenzyme A to succinate is used to transfer a phosphate group to ADP to form ATP. During Krebs Cycle, succinate is oxidized to fumarate which is coupled to the reduction of FAD to FADH2. During electron transport, the electrons from FADH2 are transferred to coenzyme Q. Which of the following catalyzes these reactions? NADH dehydrogenase Succinate dehydrogenase FADH2 hydrogenase NADH hydrogenase reductaseA high NADH/NAD+ ratio will inhibit which pathways or enzymes by LeChatelier’s principle: Options: PDC Glycolysis Gluconeogenesis b-oxidation isocitrate dehydrogenase malate dehydrogenase
- Which of the following statements inaccurately describes glutamate dehydrogenase? Glutamate dehydrogenase uses either NAD+ or NADP+ in a redox reaction Glutamate dehydrogenase catalyzes an oxidative deamination reaction Glutamate dehydrogenase equilibrium lies with the reductive amination of glutamate Glutamate dehydrogenase utilizes hydrolysis to release ammonium from an imine intermediateWhich of the following enzymes below is/are involved in the control of Krebs' cycle? citrate synthetase aconitase Fumarase isocitrate dehydrogenaseWhich of the following Krebs cycle enzymes generates a molecule of FADH2 from FAD? a-ketoglutarate dehydrogenase pyruvate dehydrogenase isocitrate dehydrogenase malate dehydrogenase succinate dehydrogenase
- Citrate synthase is inhibited by: NAD+ ADP NADH oxleoacetate All of the above None of the aboveConsider the Kreb's Cycle below. Fill in the blanks using the pool of answers below. Acetyl-SCOA A enzyme N B substrate NADH substrate Aconitase NAD+ M enzyme malate substrate NAD* fumarase Isocitrate NADH dehydrogenase CO2 fumarate K a-ketoglutarate a-ketoglutarate CoA dehydrogenase product enzyme substrate CoA CO2 substrate H substrate succinyl-SC0A product substrate product Pool of Answers: isocitrate. malate dehydrogenase oxaloacetate FADH2 FAD ATP ADP citrate NADH NAD+ GDP GTP citrate synthase citrate lyase succinate succinate dehydrogenaseSuccinate dehydrogenase generates which of the following high-energy Krebs cycle products? pyruvate glucose FADH2 NADH ATP
- Which of the following is NOT produced during the oxidative phase of the pentose phosphate shunt? a Ribulose-5-Phosphate b Glyceraldehyde-3-phosphate c CO2 d NADPHIn 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 substrate is used in the last step of glycolysis? Group of answer choices Glyceraldehyde 3-phosphate Pyruvate Phosphoenolpyruvate 1, 3-bisphosphoglycerate