9. Which of the listed enzymes of the TCA cycle is regulated by phosphorylation/dephosphorylation cycle ?...
9. Which of the listed enzymes of the TCA cycle is regulated by phosphorylation/dephosphorylation cycle ? :a. isocitrate dehydrogenase b. succinate dehydrogenase c. malate dehydrogenase d. α-ketoglutarate dehydrogenase complex\}c. citrate synthase10. Name the enzyme catalyzing the following reaction:a. PEP carboxykinaseb. pyruvate kinasec. malic enzymed. pyruvate carboxylase11. Name the enzyme that catalyzes the reaction:glyoxylate +CH3CO-SCoA → malate + HSCoAa. malate synthaseb. succinate thiokinasec. aconitased. isocitrate
1. The enzyme responsible for the substrate level phosphorylation in the citric acid cycle is: a succinate dehydrogenase b. a-ketoglutarate dehydrogenase c. succinyl thiokinase d. isocitrate dehydrogenase e. aconitase 2. Which of the listed enzymes of the TCA cycle does not represent a regulatory enzyme?: a. isocitrate dehydrogenase b. succinate dehydrogenase c. malate dehydrogenase d. a-ketoglutarate dehydrogenase complex e. citrate synthase 3. Oxidative decarboxylation of pyruvic acid is regulated by: a. cyclic AMP-dependent mechanism b. cyclic AMP-independent mechanism 4. The...
Energy depletion in the cell of bacteria or the accumulation of the intermediates of the citric acid cycle and glycolysis leads to:A. activation of isocitrate lyaseB. activation of protein kinase acting on isocitrate dehydrogenaseC. inactivation of the protein phosphatase acting on the isocitrate dehydrogenaseD. dephosphorylation of the isocitrate dehydrogenaseE. activation of citrate synthase
Can someone quick answer/check these questions? Thank you, will rate! (the answers that I have came up with are in bold) Please help 51- Glycogenesis involves the following steps a) isomerisation b) activation c) elongation or coupling d) branching e) all of the above 52 During the breakdown of glycogen, free glucose is formed from A. the reducing end. B. the non-reducing end. C. glucose residues in an a 1-->4 linkage to the chain. D. glucose residues in an...
15. Genetic defect in pyruvate dehydrogenase complex lead a. maple syrup urine disease b. phenyike d. lactic acidemia e. pellagra syrup urine disease b, phenylketonuria c. galactosemia 10. Chemical modification by phosphorylation of pyruvate dehydros a. deactivates the enzyme b. activates the enzyme lation of pyruvate dehydrogenase complex : 17. Pyruvate carboxylase is positively ated through the allosteric mechanism by : a. ATP b. NADH c. Acetyl-SCOA d. TPP e. Biotin 18. Which of the listed coenzymes does not particip...
Which enzyme catalyzes a reversible reaction in the TCA cycle, and produces NADH in the forward direction? a. Alpha-ketoglutarate dehydrogenase b. Malate dehydrogenase c. Isocitrate dehydrogenase d. Succinate dehydrogenase
11. Which enzyme is NOT part of the TCA cycle? A. Citrate synthase B. Succinate dehydrogenase C. alpha-ketoglutarate dehydrogenase D. Aconitase E. Pyruvate dehydrogenase
the citric acid cycle has 8 enzymes: citrate synthase, aconitase, isocitrase dehydrogenase,.... 1 Jom L C Tegulation TCA cycle (Ch. 16) 1. The citric acid cycle has eight enzymes: citrate synthase, aconitase, isocitrate dehydrogenase, a-ketoglutarate dehydrogenase, succinyl-CoA synthetase, succinate dehydrogenase, fumarase, and malate dehydrogenase. (a) Write a balanced equation for the reaction catalyzed by each enzyme. (b) Name the cofactor(s) required by each enzyme reaction. (c) For each enzyme determine which of the following describes the type of reaction(s) catalyzed:...
Part B Use the structures given in the cycle shown before this part identify the enzymes involved in each step of the citric acid cycle by completing each sentence Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help isocitrate dehydrogenase aconitase citrate synthase fumarate hydratase succinate dehydrogenase succinyl-CoA synthetase a-ketoglutarate dehydrogenase malate dehydrogenase In step 1, oxaloacetate condenses with acetyl-CoA to form citrate, which is catalyzed by...
Question 24 (1 point) Which of the following enzymes does not catalyze a reaction in which carbon dioxide (CO2) is released? O Alpha-ketoglutarate dehydrogenase Pyruvate dehydrogenase Malate dehydrogenase Isocitrate dehydrogenase Question 25 (1 point) The acute toxicity of cyanide to mammals is primarily caused by its ... O inhibition of cytochrome oxidase. O action as an uncoupler of oxidative phosphorylation. O inhibition of complex I of the electron transport chain. O inhibition of the citric acid cycle enzyme succinate dehydrogenase,