Concept explainers
(a)
To describe:
The reaction that requires energy in citrate export.
Introduction:
The citrate export is the process of exporting the citrate molecules from the lumen of the mitochondria to the cytosol.
(b)
To describe:
The reaction that requires energy in citrate export.
Introduction:
The citrate export is the process of exporting the citrate molecules from the lumen of the mitochondria to the cytosol.
(b)
To describe:
The source of the required energy in citrate export.
Introduction:
The citrate export is the process of exporting the citrate molecules from the lumen of the mitochondria to the cytosol.
(c)
To describe:
The reaction that requires enzyme in citrate export.
Introduction:
The citrate export is the process of exporting the citrate molecules from the lumen of the mitochondria to the cytosol.
(d)
To describe:
The coenzymes required in citrate export.
Introduction:
The citrate export is the process of exporting the citrate molecules from the lumen of the mitochondria to the cytosol.
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Chapter 19 Solutions
Biochemistry
- Understanding the Oxidation of Glucose and Its Products in the TCA Cycle Glycolysis, the pyruvate dehydrogenase reaction, and the TCA cycle result in complete oxidation of a molecule of glucose to CO2. Review the calculation of oxidation numbers for individual atoms in any molecule, and then calculate the oxidation numbers of the carbons of glucose, pyruvate, the acetyl carbons of acetyl-CoA. and the metabolites of the TCA cycle to convince yourself that complete oxidation of glucose involves removal of 24 electrons and that each acetyl-CoA through the TCA cycle gives up 8 electrons.arrow_forwardUnderstanding the Stoichiometry of Cholesterol Synthesis Write a Balanced, stoichiometric reaction for the synthesis of cholesterol from acetyl-CoA.arrow_forwardEffects of Changing Metabolite Concentrations on Glycolysis In an erythrocyte undergoing glycolysis what would be the effect of a sudden increase in the concentration of a. AΤP? b. AMP? c. fructose-1.6-bisphosphate? d. fructose-2, 6-bisphosphate? e. citrate? f. glucose-6-phospthate?arrow_forward
- Complete oxidation of a 16-carbon fatty acid can yield 129 molecules of ATP Study Figure 19.2 and determine how many ATP molecules would be generated if a 16-carbon fatly acid were metabolized solely by the TCA cycle, in the form of S acetyl-CoA molecules.arrow_forwardEthanol as a Source of Metabolic Energy (Integrates with Chapters 19 and 20.) Acetate produced in ethanol metabolism can be transformed into acetyl-COA by the acetyl thiokinase reaction: Acetate+ATP+CoASHacetyleCoA+AMP+PPiAcetyle-CoA then can enter the citric acid cycle and undergo oxidation to 2 CO2by this route, assuming oxidative phosphorylation is part of the process? (Assume all reactions prior to acetyl-CoA entering the citric acid cycle occur outside the mitochondrion). Per carbon atom, which is a better metabolic fuel, ethanol or glucose? That is, how many ATP equivalents per carbon atom are generated by combustion of glucose versus ethanol to CO2?arrow_forwardModeling the Regulation of AcetyI-CoA Carboxylase Based on the information presented in the text and in Figures 24.4 and 24.5, suggest a model for the regulation of acetyl-CoA carboxylase. Consider the possible roles of subunit interactions, phosphorylation, and conformation changes in your model.arrow_forward
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning