If there is an accumulation of acetyl CoA in the liver mitochondria, acetyl CoA is converted to oxaloacetate. True False
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- Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is inhibited by· NIADH. Pyruvate dehydrogenase is inhibited by AΤΡ. Citrate synthase is inhibited by NADH. Succinyl-CoA activates citrate synthase. Acetyl-CoA activates pyruvate carboxylase.True or falseKetone body synthesis requires transportation of acetyl-CoA through the inner mitochondrial membraneAfter several days of starvation, the capacity of the liver to metabolize acetyl-CoA via the citric acid cycle is greatly diminished. Explain.
- Indicate whether each of the following statements is true or false. If false, correct the statement or provide a brief explanation for why it is false. Malonyl-CoA inhibits carnitine acyltransferase II , thus slowing transport of fatty acyl-CoA into mitochondrial matrix.What is the name of the enzyme that produces acetyl-CoA? What is the name of its major inhibitor? If this inhibitor is active, how will carbohydrate metabolism be affected? Be specific. (The word metabolism isn’t specific.)The enzyme that decarboxylates pyruvate before it gets converted to Acetyl CoA is a. Pyruvate dehydrogenase b. Pyruvate decarboxylase c. Pyruvate carboxylase d. Pyruvate oxidative decarboxylase
- Acetyl-CoA is produced when ____ is broken down.Elevated levels of acetyl-CoA will act as an effector for which of the following enzymes? more than one can be correct Pyruvate carboxylase. Pyruvate kinase Pyruvate dehydrogenase. Citrate synthase a-Ketoglutarate dehydrogenase.The acetyl group of acetyl-CoA is derived from the breakdown of lipids, carbohydrates, and certain _____________.
- Which of the following intermediates serve as the brain’s primary source of energy during prolonged starvation? Group of answer choices acetyl CoA pyruvate fatty acyl CoA glucose acetoacetateWhich of the following is not made from excess Acetyl CoA when a person is starving? Acetone Fatty Acids Acetoacetate 2-hydroxybutyrateExplain the difference of carbohydrate (glycolysis) from lipid (β-oxidation) metabolism in terms of producing an acetyl-coA that will enter the Kreb cycle?