NADH needs what intermediates from the citric cycle to get its electrons from the cytoplasma to...
NADH needs what intermediates from the citric cycle to
get its electrons from the cytoplasma to the mitochondria?
a. fumerate and succinylcoA
b. oxaloacetate and malate
c. isocitrate and alpha ketoglutarate
d.citrate and succinate
Homework Answers
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NADH needs what intermediates from the citric cycle to
get its electrons from the cytoplasma to...
6. In mammals, which of the following does not occur during the citric acid cycle? A)...
6. In mammals, which of the following does not occur during the citric acid cycle? A) formation of a-ketoglutarate. D) metabolism of acetate to carbon dioxide and water. B) net synthesis of oxaloacetate from acetyl-CoA. E) oxidation of acetyl-CoA. C) generation of NADH and FADHz. 7. Which of the following reaction generates GTP(ATP) in the CAC? A) Isocitrate to a-ketoglutarate. D) Fumarate to Malate. B) Malate to Oxaloacetate. E) Succinyl-CoA to Succinate. C) a-ketoglutarate to Succinyl-CoA.
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...
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 +...
acetyl-CoA COA The reactions of the citric acid cycle are shown in the image. As labeled...
acetyl-CoA COA The reactions of the citric acid cycle are shown in the image. As labeled in the diagram, reactions 1, 3, and 4 are regulation points in the citric acid cycle. oxaloacetate citrate synthase citrate NADH +Hi 7 malate dehydrogenase NAD malate aconitase 2 Which molecule inhibits reaction 1? isocitrate 7 fumarase NAD isocitrate dehydrogenase 3 NADH + H+ O citrate O NAD acetyl-CoA + CO2 fumarate C-ketoglutarate FADH succinate O dehydrogenase FAD O-ketoglutarate a dehydrogenase NAD + COA...
The number of electrons produced by one cycle of Krebs is 6 b. 8 &n
The number of electrons produced by one cycle of Krebs is 6 b. 8 c. 4 d. 2 The Ala that comes from the muscle is returned to the muscle as pyruvate c. glucose glutamate d. a-ketoglutarate Oxaloacetate enters the urea cycle as citrulline c. glutamate aspartate d. fumarate The oxidation of pyruvate to AcCoA uses similar cofactors as the oxidation of malate succinate a-ketoglutarate isocitrate The enzyme that requires FAD as cofactor is...
Which enzyme catalyzes a reversible reaction in the TCA cycle, and produces NADH in the forward...
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
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 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
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...
GTP or ATP is produced during the conversion of _ A isocitrate into a-ketoglutarate o B...
GTP or ATP is produced during the conversion of _ A isocitrate into a-ketoglutarate o B succinyl CoA into succinate O C fumarate into malate O D malate into oxaloacetate Fill in the Blanks For each of these products, indicate how many are made as a result of the citric acid cycle for each glucose molecule that is broken down: NADH FADH2 CO2
6. In mammals, which of the following does not occur during the citric acid cycle? A) formation of a-ketoglutarate. D) metabolism of acetate to carbon dioxide and water. B) net synthesis of oxaloacetate from acetyl-CoA. E) oxidation of acetyl-CoA. C) generation of NADH and FADHz. 7. Which of the following reaction generates GTP(ATP) in the CAC? A) Isocitrate to a-ketoglutarate. D) Fumarate to Malate. B) Malate to Oxaloacetate. E) Succinyl-CoA to Succinate. C) a-ketoglutarate to Succinyl-CoA.
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...
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 +...
acetyl-CoA COA The reactions of the citric acid cycle are shown in the image. As labeled in the diagram, reactions 1, 3, and 4 are regulation points in the citric acid cycle. oxaloacetate citrate synthase citrate NADH +Hi 7 malate dehydrogenase NAD malate aconitase 2 Which molecule inhibits reaction 1? isocitrate 7 fumarase NAD isocitrate dehydrogenase 3 NADH + H+ O citrate O NAD acetyl-CoA + CO2 fumarate C-ketoglutarate FADH succinate O dehydrogenase FAD O-ketoglutarate a dehydrogenase NAD + COA...
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 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
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...
GTP or ATP is produced during the conversion of _ A isocitrate into a-ketoglutarate o B succinyl CoA into succinate O C fumarate into malate O D malate into oxaloacetate Fill in the Blanks For each of these products, indicate how many are made as a result of the citric acid cycle for each glucose molecule that is broken down: NADH FADH2 CO2
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