Fluoride is an inhibitor of which of the following glycolytic enzymes? A. Glyceraldehyde 3 po4 dehydrogenase B. Inolase C. Pyruvate kinasa D. 1,3 Bisphosproglycerate kinase
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- Which of the following enzymes possesses a catalytic mechanism extremely similar to that of the Pyruvate Dehydrogenase Complex? A. the isocitrate dehydrogenase B. the succinate dehydrogenase C. the alpha-ketoglutarate dehydrogenase D. the malate dehydrogenaseWhat enzyme is inhibited by the group of medications known as statins? a)HMG-CoA synthase b)Aromatase c)Fatty acid synthase d)CyclooxygenaseThe first enzyme in the Krebs cycle is theA.citrate synthaseB.pyruvate dehydrogenaseC. α- ketoglutarate dehydrogenase D.aconitase
- Which of the following citric acid cycle enzymes catalyzes substrate-level phosphorylation? A) isocitrate dehydrogenase B) α-ketoglutarate dehydrogenase C) succinyl CoA synthetase D) succinate dehydrogenase E) malate dehydrogenaseStatin drugs are used to treat hypercholesterolemia because they a. prevent cholesterol from inserting in plasma membranes b. prevent cholesterol ester formation c. inhibit HMG-CoA reductase d. stimulate HMG-CoA synthaseIdentify the Krebs cycle enzyme that consumes a six-carbon substrate molecule, producing a six-carbon product molecule, but neither consumes nor produces NADH? A. a-ketoglutarate dehydrogenase B. isocitrate dehydrogenase C. succinyl CoA synthetase D. malate dehydrogenase E. aconitase
- Which of the following stimulates the conversion of pyruvate to acetyl-CoA? a) Activation of pyruvate dehydrogenase kinase b) A decrease in the ratio of NAD+/NADH c) Bothaandb d) Neither a nor bIn the glyoxylate cycle, isocitrate is converted directly to what substance? a.fumarate b.succinate c.malate d.oxaloacetateThe most regulated enzyme in glycolysis is a Hexokinase b G3P Dehydrogenase c Pyruvate Kinase d Phosphofructokinase
- CHOOSE THE CORRECT LETTER 1.Which of the following enzymes catalyze the reaction involved in the production of FADHy in the Kreb's cycle?A. malate dehydrogenaseB. a-ketoglutarate dehydrogenaseC.isocitrate dehydrogenaseD. succinate dehydrogenase 2.Steric acid requires eight cycles of B-oxidation to be completely converted to acety/-CoA.A.TrueB. FalseWhich of the following is a negative regulator of the pyruvate dehydrogenase complex (PDC)? 1. acetyl CoA 2. ADP 3. pyruvate 4. citrateWhich of the following is NOT a component of the pyruvate dehydrogenase complex? a. dihydrolipoyl dehydrogenase b. dihydrolipoyl transacetylase c. pyruvate dehydrogenase d. dihydrolipoyl catalase