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Solved in 2 steps
- Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is inhibited by· NIADH. Pyruvate dehydrogenase is inhibited by AΤΡ. Citrate synthase is inhibited by NADH. Succinyl-CoA activates citrate synthase. Acetyl-CoA activates pyruvate carboxylase.Which of the following glycolytic enzymes catalyzes the conversion of fructose-1,6-bisphosphate into the two product molecules dihydroxyacetone phosphate, and glyceraldehyde-3-phosphate? phosphoglycerate kinase pyruvate kinase malate dehydrogenase aldolase phosphofructokinaseWhich of the following glycolytic enzymes catalyzes the conversion of fructose-6-phosphate into fructose-1,6-bisphosphate, but does not produce any ATP or NADH in the process? phosphoglycerate kinase pyruvate kinase malate dehydrogenase glucokinase phosphofructokinase
- Which of the following glycolytic enzymes must consume ATP during phosphorylation of its preferred substrate molecule? phosphoglycerate mutase pyruvate kinase succinate dehydrogenase hexokinase phosphoglycerate kinaseWhich glycolysis reactions are catalyzed by the following enzymes?(a) Pyruvate kinase(b) Glyceraldehyde 3-phosphate dehydrogenase(c) Hexokinase(d) Phosphoglycerate mutase(e) AldolaseWhich of the following enzymes functions in opposition of PFK, and therefore is inhibited by fructose-2,6-bisphosphate? Fructose 1,6-bisphosphatase Glucokinase Pyruvate Carboxylase Glucose 6-phosphatase
- Which of the following Krebs cycle enzymes generates a molecule of FADH2 from FAD? a-ketoglutarate dehydrogenase pyruvate dehydrogenase isocitrate dehydrogenase malate dehydrogenase succinate dehydrogenaseWhat effects do the following molecules have ongluconeogenesis?a. lactateb. ATPc. pyruvated. glycerole. AMPf. acetyl-CoADuring glycolysis, the major energy generating step involves: pyruvate kinase phosphoglycerate kinase Phosphofructokinase glyceraldehyde-3 -dehydrogenase
- Elevated levels of acetyl-CoA will act as an effector for which of the following enzymes? more than one can be correct Pyruvate carboxylase. Pyruvate kinase Pyruvate dehydrogenase. Citrate synthase a-Ketoglutarate dehydrogenase.Which of the listed glycolytic enzymes adds a phosphate group to ADP to produce ATP? 1.) pyruvate kinase 2.) hexokinase 3.) phosphofructokinase-1 4.) pyruvate dehydrogenase 5.) phosphexose isomerase 6.) lactate dehydrogenaseWhich of the following is NOT a component of the pyruvate dehydrogenase complex? a. dihydrolipoyl dehydrogenase b. dihydrolipoyl transacetylase c. pyruvate dehydrogenase d. dihydrolipoyl catalase
