is an amino acid that can be directly converted into a citric acid cycle intermediate by being exposed to TWO consecutive deamination reactions (removal of an amine group)
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_______ is an amino acid that can be directly converted into a citric acid cycle intermediate by being exposed to TWO consecutive deamination reactions (removal of an
a. threonine
b. glutamate
c. glutamine
d. tyrosine
e. proline
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- How would a riboflavin deficiency affect the functioning of the citric acid cycle? Explain your answer.The function of the citric acid cycle is to (a) produce energy during periods of active muscle contraction. (b) break six-carbon chains into three-carbon fragments. (c) prepare the glucose molecule for further reactions. (d) remove hydrogen atoms from organic molecules and transfer them to coenzymes.Which of the following citric acid cycle intermediates is decarboxylated during the operation of the cycle? A. More than one correct response B. No correct response C. Isocitrate D. Succinate E. Oxaloacetate
- Which citric acid cycle intermediate can move from the mitochondria into the cytoplasm to become the activator of fatty acid synthesis? Select one: a. Succinyl-CoA b. Fumarate c. Citrate d. MalateWhich of the following can undergo metabolic conversion to acetyl CoA and enter the citric acid cycle? A. Fatty acids B. All of the choices are correct. C. Protein D. GlucoseWhich of these is not true of the citric acid cycle?a. The citric acid cycle includes the prep reaction.b. The citric acid cycle produces ATP by substrate-level ATPsynthesis.c. The citric acid cycle occurs in the mitochondria.d. The citric acid cycle produces two ATP per glucose molecule.
- The enzymes of the citric acid cycle are located in a. Cytoplasm b. Endoplasmic reticulum c. Mitochondrial matrix d. NucleusBeta oxidation is ______. a. the breakdown of sugars b. the assembly of sugars c. the breakdown of fatty acids d. the removal of amino groups from amino acidsAfter the citric acid cycle reactions run _________, one six-carbon glucose molecule has been completely broken down to CO2. a. once b. twice c. six times d. twelve times
- When one acetyl CoA is processed through the citric acid cycle, how many times does each of the following events occur? a. A FAD molecule is a reactant. b. A CoA-SH molecule is produced. c. A dehydrogenase enzyme is needed for the reaction to occur. d. A C5 molecule is produced.What might you expect if a mutation caused the ATP-allosteric site on phosphofructokinase to be permanently inactive? a. Less glucose transported into the cell. b. No effect on ATP production. c. Decreased ATP production d. Excessive ATP production.You hear a fellow student say that the oxidation of unsaturated fatty acids requires exactly the same group of enzymes as the oxidation of saturated fatty acids. Is the statement true or false? Why?
