Concept explainers
(a)
Interpretation: To indicate whether the statement “
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenolysis is the
An intermediate is defined as the transient species that is formed from the reactants in the preceding step and gets consumed in the subsequent steps to generate the products. An intermediate is formed within a multi-step reaction mechanism.
In the isomerization reaction, a molecule transformed itself to another molecule, having the same number of atoms with a different arrangement.
(b)
Interpretation: To indicate whether the statement “an isomerization reaction changes
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenolysis is the metabolic pathway that converts glycogen to
In the isomerization reaction, a molecule transformed itself to another molecule, having the same number of atoms with a different arrangement.
(c)
Interpretation: To indicate whether the statement “an ATP molecule is used to activate a
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenolysis is the metabolic pathway that converts glycogen to
Adenosine triphosphate (ATP) is the energy currency of life that provides energy to carry out the metabolic processes in the living cells.
(d)a
Interpretation: To indicate whether the statement “the equivalent of two ATP molecules are consumed” relating to glycogenolysis is true or false.
Concept introduction: Glucose is a monosaccharide with the molecular formula
Glycogenolysis is the metabolic pathway that converts glycogen to
Adenosine triphosphate (ATP) is the energy currency of life that provides energy to carry out the metabolic processes in the living cells.
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Chapter 24 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- The rate limiting and committed step of the pentose phosphate pathway is catalyzed by which of the following enzymes? A. Glucose-6-phosphate dehydrogenase B. Hexokinase C. 6-Phosphogluconate dehydrogenase D. Transketolasearrow_forwardThe immediate product of glycogen phosphorylase is: a. Glucose 6-phosphate. b. Glucose 1-phosphate. c. Fructose 1-phosphate. d. Glucose 1,6-bisphosphatearrow_forwardMatch the enzyme to the reaction catalysed. Not all the enzymes have to be selected, and an enzyme may be used more than once. v Synthesizes phosphatidic acid A. Glycerol-3-phosphate dehydrogenase v Synthesizes triacylglycerol B. Glycerol kinase v Synthesizes acetoacetyl-CoA C. Acyl-CoA cholesterol acyl transferase v Synthesizes mevalonate D. Lipin v Synthesize 1,2 diacylglycerol E. Acyl transferase v Converts glycerol into glycerol-3-phosphate F. HMG-CoA reductase v Converts dihydroxyacetone phosphate into glycerol-3-phosphate G. Thiolase v Synthesize cholesterol-esterarrow_forward
- Which of the following is the first step of glycolysis? Select one: a. Glyceraldehyde-3-phosphate is converted to 1,3 Bisphosphoglycerate b. Dihydroxyacetone (Glycerone Phosphate) is converted to Glyceraldehyde-3-phosphate c. 1,3 Bisphosphoglycerate is converted to 3-phosphoglycerate d. Fructose-6-phosphate is converted to Fructose-1,6,bisphosphate e. 3-phosphoglycerate is converted 2-phosphoglycerate f. 2-phosphoglycerate is converted to Phosphoenolpyruvate g. Phosphoenolpyruvate is converted to pyruvate h. Glucose-6-phosphate is converted to Fructose-6-phosphate i. Fructose-1,6 Bisphosphate is converted to Dihydroxyacetone and Glyceraldehyde-3-phosphate j. Glucose is converted to Glucose-6-phosphatearrow_forwardMatch the description with the correct enzyme. Descriptions: a. Uses alpha-keto carboxylic acid as a substrate b. Directly transfers cytosolic reducing equivalents into the electron transport chain c. Its activity depends on magnesium ions Options (enzymes): A. Mitochondrial glycerol 3-phosphate dehydrogenase B. Succinate dehydrogenase C. Cytosolic glycerol 3-phosphate dehydrogenase D. Cytochrome oxidase E. Rubisco F. α-ketoglutarate dehydrogenase complexarrow_forwardWhich of the following is NOT involved in the activation of glucose for glycogen synthesis? A. Phosphorylation of glucose by hexokinase to glucose-6-phosphate. B. Isomerization of glucose-6-phosphate to fructose-6-phosphate by phosphohexose isomerase. C. Two-step phosphoryl group transfer by phosphoglucomutase. D. Attachment of glucose-1-phosphate to UDP.arrow_forward
- Determine the number of carbon atoms present and the the total number of phosphate groups present in each of these following intermediates of glycolysis: a. Glucose 6-phosphate b. Fructose 1,6-phosphatearrow_forwardDefine the following terms:a. glycolysisb. pentose phosphate pathwayc. gluconeogenesisd. glycogenolysise. glycogenesisarrow_forwardIdentify the conversion which is not involved in glycolysis. a.Glucose to glucose 6-phosphate by hexokinase b.Triose phosphate to 2-phosphoglycerate by phosphoglyceromutase c.PEP to pyruvic acid by pyruvate kinase d.Sucrose to glucose and fructose by invertasearrow_forward
- Which of the following molecules would inhibit, either directly or indirectly, the protein phosphatase, PP-1? O A. Insulin O B. Glucose C. None of the choices presented in this question are correct D. Glucagon O E. Glucose 6-phosphatearrow_forwardThe first product formed during glycogenolysis (glycogen degradation at alpha 1,4 glycosidic bonds) is: a. Glucose 6 Phosphate b. UDP-glucose c. Glucose 1 phosphate d. Glucose e. Glucose 1,6 bisphosphatearrow_forwardWhich of the following statements concerning the enzyme regulation is CORRECT? Select one: A. Citrate is the allosteric inhibitor of hexokinase. B. AMP is the alloseric activator of pyruvate dehydrogenase. C. Glucose-6-phosphate is the allosteric activator for phosphofructokinase. D. ATP is the activator of pyruvate kinase.arrow_forward
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