37. If citric acid cycle enzymes are being inhibited, excess acetyl-CoA cannot be processed in the...
37. If citric acid cycle enzymes are being inhibited, excess acetyl-CoA cannot be processed in the citric acid cycle. This excess acetyl-CoA could be utilized to form
A. pyruvate.
B. oxaloacetate (OAA).
C. fatty acids.
A and B
all of the above
Homework Answers
C. Fatty acids
Acetyl CoA is a molecule involved in cellular respiration. It is produced by the process of glycolysis, which further enters TCA to release energy.
When the excess acetyl CoA is produced by glycolysis , it is transferred to cytoplasm from mitochondrio for fatty acid synthesis.
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37. If citric acid cycle enzymes are being inhibited, excess
acetyl-CoA cannot be processed in the...
Acetyl-CoA labeled with C, as shown, can enter the citric acid cycle. Assuming all the acetyl-CoA...
Acetyl-CoA labeled with C, as shown, can enter the citric acid cycle. Assuming all the acetyl-CoA enters the cycle... 1. What fraction of the label will be present in oxaloacetate at the end of one turn of the cycle? 14 2. Which carbons in the oxaloacetate formed by one turn of the cycle would contain the radioactive label? C4 C3 C2 Ci .What fraction of the original radiolabel present in the acetyl-CoA will be present in oxaloacetate at the end...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA O conversion of glutamic acid to e-ketoglutarate O conversion of citrate to oxaloacetate and acetyl-CoA conversion of oxaloacetate to pyruvate O conversion of succinyl-Cos to heme
1. In untreated Type 1 diabetes, the hepatocyte's citric acid cycle becomes overwhelmed with acetyl-CoA fr...
1. In untreated Type 1 diabetes, the hepatocyte's citric acid cycle becomes overwhelmed with acetyl-CoA fr Map excessive fatty acid oxidation. Although the excess acetyl-CoA is not toxic, it must be diverted into the formation of ketone bodies: acetone, acetoacetate, and D-(hydroxybutyrate.
What problem would arise if the excess acetyl-CoA were not converted to ketone bodies?
How does the diversion to ketone bodies solve the problem?
The enzymes converting acetyl-CoA to acetoacetate liberate the CoA to be used in...
_--carbon molecule QUESTION 10 During the citric acid cycle, acetyl CoA covalently binds to oxaloacetate to...
_--carbon molecule QUESTION 10 During the citric acid cycle, acetyl CoA covalently binds to oxaloacetate to form citrate, a A six B four C. five D. two E three
5. In the Citric Acid Cycle, a flavin coenzyme is required for a. Condensation of acetyl-CoA...
5. In the Citric Acid Cycle, a flavin coenzyme is required for a. Condensation of acetyl-CoA and Oxaloacetate. b. Oxidation of Succinate c. Oxidation of Isocitrate. d. Oxidation of Malate. e. Hydration of Fumarate.
In the liver, which of the following enzymes is inhibited by malonyl CoA? A: fatty acid...
In the liver, which of the following enzymes is inhibited by malonyl CoA? A: fatty acid synthase, B: Acetyl CoA carboxylase, C: CPT-1, D: Hormone sensitive lipase
The levels of which metabolite determine whether acetyl COA can enter the citric acid cycle? a....
The levels of which metabolite determine whether acetyl COA can enter the citric acid cycle? a. succinate b. a-ketoglutarate c. citrate d. oxaloacetate
8. The citric acid cycle requires acetyl-CoA to begin. Describe how acetyl-CoA is produced for the...
8. The citric acid cycle requires acetyl-CoA to begin. Describe how acetyl-CoA is produced for the citric acid cycle.
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...
Which of the following is not a net product of the citric acid cycle for each...
Which of the following is not a net product of the citric acid cycle for each molecule of pyruvate generated in glycolysis? Select one: a. 1 ATP (GTP) b. 1 acetyl coA c. 3 NADH d. 1 FADH2 Question 2 Which of the following is NOT an end product for an acetyl group that enters the citric acid cycle? Select one: a. ATP b. NADH c. FADH2 d. oxaloacetate Question 3 Once they have been processed through the citric acid...
Acetyl-CoA labeled with C, as shown, can enter the citric acid cycle. Assuming all the acetyl-CoA enters the cycle... 1. What fraction of the label will be present in oxaloacetate at the end of one turn of the cycle? 14 2. Which carbons in the oxaloacetate formed by one turn of the cycle would contain the radioactive label? C4 C3 C2 Ci .What fraction of the original radiolabel present in the acetyl-CoA will be present in oxaloacetate at the end...
Which of the following is an anaplerotic reaction for the citric acid cycle? O conversion of pyruvate to acetyl-CoA O conversion of glutamic acid to e-ketoglutarate O conversion of citrate to oxaloacetate and acetyl-CoA conversion of oxaloacetate to pyruvate O conversion of succinyl-Cos to heme
1. In untreated Type 1 diabetes, the hepatocyte's citric acid cycle becomes overwhelmed with acetyl-CoA fr Map excessive fatty acid oxidation. Although the excess acetyl-CoA is not toxic, it must be diverted into the formation of ketone bodies: acetone, acetoacetate, and D-(hydroxybutyrate.
What problem would arise if the excess acetyl-CoA were not converted to ketone bodies?
How does the diversion to ketone bodies solve the problem?
The enzymes converting acetyl-CoA to acetoacetate liberate the CoA to be used in...
_--carbon molecule QUESTION 10 During the citric acid cycle, acetyl CoA covalently binds to oxaloacetate to form citrate, a A six B four C. five D. two E three
5. In the Citric Acid Cycle, a flavin coenzyme is required for a. Condensation of acetyl-CoA and Oxaloacetate. b. Oxidation of Succinate c. Oxidation of Isocitrate. d. Oxidation of Malate. e. Hydration of Fumarate.
8. The citric acid cycle requires acetyl-CoA to begin. Describe how acetyl-CoA is produced for the citric acid cycle.
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...
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