Which enzyme in the citric acid cycle is responsible for catalyzing the rate-limiting step? Alpha-ketoglutarate dehydrogenase...
Which enzyme in the citric acid cycle is responsible for catalyzing the rate-limiting step?
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Alpha-ketoglutarate dehydrogenase |
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Isocitrate dehydrogenase |
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Citrate synthase |
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Malate dehydrogenase |
Homework Answers
1. Isocitrate dehydrogenase enzyme in the citric acid cycle is responsible for catalyzing the rate-limiting step.
2. It is a digestive enzyme that is used in the citric cycle.
3. It controls the first of these two steps, it turns the six-carbon molecule into five-carbon molecule.
4. isocitrate dehydrogenase is inhibited by ATP and NADH and activated by ADP.
5. The main function of this enzyme is to catalyze the oxidative decarboxylation of isocitrate into alpha-ketoglutarate.
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Which enzyme in the citric acid cycle is responsible for
catalyzing the rate-limiting step?
Alpha-ketoglutarate dehydrogenase...
1. The enzyme responsible for the substrate level phosphorylation in the citric acid cycle is: a...
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...
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...
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...
Incorrect Question 3 0/1 pts Which enzyme is the link between the citric acid cycle and...
Incorrect Question 3 0/1 pts Which enzyme is the link between the citric acid cycle and ATP formation? succinatethiokinase succinate dehydrogenase malate dehydrogenase citrate synthase isocitrate dehydrogenase
The first reaction of the citric acid cycle, where acetyle-CoA and combine to form citrate, is...
The first reaction of the citric acid cycle, where acetyle-CoA and combine to form citrate, is catalyzed by OAA; alpha-ketoglutarate dehydrogenase COA; isocitrate dehydrogenase isocitrate; citrate synthase OAA: citrate synthase
the citric acid cycle has 8 enzymes: citrate synthase, aconitase, isocitrase dehydrogenase,.... 1 Jom L C...
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:...
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
not sure about reaction 3 and 4 acetyl-CoA COA The reactions of the citric acid cycle...
not sure about reaction 3 and 4
acetyl-CoA COA The reactions of the citric acid cycle are shown in the figure Reactions 1, 3, and 4 are regulation points in the citric acid cycle. 1 citrate oxaloacetate 1 synthase citrate NADH + NAD malate dehydrogenase aconitase 2 malate Which of the molecules inhibits reaction 1? Isocitrate HO 17 fumarase NAD socitrate 3 dehydrogenase S D NADP ADP ОАТР O citrate synthase fumarate FADHI succinate co-ketoglutarate dehydrogenase ci-ketoglutarate NAD dehydrogenase +...
Which of the following citric acid cycle enzymes lead to the formation of NADH and are...
Which of the following citric acid cycle enzymes lead to the formation of NADH and are regulatory enzymes? Isocitrate dehydrogenase Succinyl-CoA synthetase Succinate dehydrogenase Malate dehydrogenase • Citrate synthase
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. a-ketoglutarate dehydrogenase complex e. citrate synthase 10. Name the enzyme catalyzing the following reaction: COOH + GTP - PEP + CO2 + GDP C=0 CH2 COOH a. PEP carboxykinase b. pyruvate kinase d. pyruvate carboxylase c. malic enzyme 11. Name the enzyme that catalyzes the reaction: glyoxylate + CH3CO-SCOA -- → malate +...
Which enzyme is NOT involved in the regulation of the citrate cycle? A) a-ketoglutarate dehydrogenase B)...
Which enzyme is NOT involved in the regulation of the citrate cycle? A) a-ketoglutarate dehydrogenase B) Succinate dehydrogenase C) Citrate synthase D) socitrate dehydrogenase
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...
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...
Incorrect Question 3 0/1 pts Which enzyme is the link between the citric acid cycle and ATP formation? succinatethiokinase succinate dehydrogenase malate dehydrogenase citrate synthase isocitrate dehydrogenase
The first reaction of the citric acid cycle, where acetyle-CoA and combine to form citrate, is catalyzed by OAA; alpha-ketoglutarate dehydrogenase COA; isocitrate dehydrogenase isocitrate; citrate synthase OAA: citrate synthase
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:...
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
not sure about reaction 3 and 4
acetyl-CoA COA The reactions of the citric acid cycle are shown in the figure Reactions 1, 3, and 4 are regulation points in the citric acid cycle. 1 citrate oxaloacetate 1 synthase citrate NADH + NAD malate dehydrogenase aconitase 2 malate Which of the molecules inhibits reaction 1? Isocitrate HO 17 fumarase NAD socitrate 3 dehydrogenase S D NADP ADP ОАТР O citrate synthase fumarate FADHI succinate co-ketoglutarate dehydrogenase ci-ketoglutarate NAD dehydrogenase +...
Which of the following citric acid cycle enzymes lead to the formation of NADH and are regulatory enzymes? Isocitrate dehydrogenase Succinyl-CoA synthetase Succinate dehydrogenase Malate dehydrogenase • Citrate synthase
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. a-ketoglutarate dehydrogenase complex e. citrate synthase 10. Name the enzyme catalyzing the following reaction: COOH + GTP - PEP + CO2 + GDP C=0 CH2 COOH a. PEP carboxykinase b. pyruvate kinase d. pyruvate carboxylase c. malic enzyme 11. Name the enzyme that catalyzes the reaction: glyoxylate + CH3CO-SCOA -- → malate +...
Which enzyme is NOT involved in the regulation of the citrate cycle? A) a-ketoglutarate dehydrogenase B) Succinate dehydrogenase C) Citrate synthase D) socitrate dehydrogenase
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