Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 17, Problem 6P
Why Do Anabolic and Catabolic Pathways Differ? Why is the pathway for the biosynthesis of a
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UDP-glucuronosyltransferase enzymes bind the organic compound UDP-glucuronic acid (UDP-GA) in order to catalyse the transfer of a glucuronic acid group from UDP-GA to a drug molecule, releasing UDP from the active site as a product. UDP is then regenerated by the activity of another enzyme.
What terms could be used to describe UDP-GA?
create a single illustration that will interrelate or link the two opposing pathways, the Glycogenesis and Glycogenolysis. I want you to include the enzyme in each step and include some important by-products as well. From the illustration, I want you to encircle the intermediate molecule to highlight the link between the two processes. Aside from the illustration, I want you to compare and contrast the two pathways in terms of function, number of reaction steps, and usage of UTP. You can tabulate this part to make it simpler.
Which of the following statements regarding catabolism and anabolism is incorrect?
a) All metabolic reactions give off energy as their by-product.
b) Synthesis of polysaccharides from monosaccharides is an example of anabolic process.
c) Hydrolysis of oligosaccharides to monosaccharides is an example of catabolic process.
d) Some, but not all, metabolic reactions involve catabolism.
Chapter 17 Solutions
Biochemistry
Ch. 17 - Global Carbon Dioxide Cycling Expressed as Human...Ch. 17 - Prob. 2PCh. 17 - Where Do the O Atoms in Organisms Come From? Name...Ch. 17 - How Do Catabolism and Anabolism Differ? What are...Ch. 17 - How Art the Enzymes of Metabolic Pathways...Ch. 17 - Why Do Anabolic and Catabolic Pathways Differ? Why...Ch. 17 - Prob. 7PCh. 17 - How Is Metabolism Regulated? (Integrates with...Ch. 17 - Prob. 9PCh. 17 - Prob. 10P
Ch. 17 - Which Is “Better: NMR or MS? Compare and...Ch. 17 - How Do Vitamin-Derived Coenzymes Aid Metabolism?...Ch. 17 - What Art the Features of the Series of -omes?...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Prob. 18PCh. 17 - Which of the following experimental approaches is...Ch. 17 - Prob. 20P
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- Which of the following statement regarding coenzyme A is incorrect? a) The B vitamin pantothenic acid is present as a subunit of its structure. b) Its main biochemical function is to transfer acetyl groups. c) Its structure contains a phosphorylated ADP.. d) The B vitamin pantothenic acid is the “active” subunit of the coenzyme A.arrow_forwardWhich of the following catalyzes reactions that incorporate nitrogen derived from glutamine? a) Glutamine synthase b) Glutamine amidotransferase c) Adenylyltransferase d) Glutamate synthasearrow_forwardWhat is the committed step of pyrimidine biosynthesis? Include the names and structures of any product(s), substrate(s), and cofactors, and the name of the enzyme responsible.arrow_forward
- How Do Catabolism and Anabolism Differ? What are the features that generally distinguish pathways of catabolism from pathways of anabolism?arrow_forwardIsozymes: d) One way of regulating metabolic pathways is through isozymes. What is an isozyme? e) Provide a concrete example of an isozyme from carbohydrate metabolism. f) From your chosen isozyme in part b), describe how it is regulated differently in various cells.arrow_forwardThe following are coenzymes or cofactors involved in enzymatic reactions. Identify the biochemical role that each plays within a biochemical transformation: Cofactor/Coenzyme Biochemical Role S-adenosylmethionine NADH NADPH FADH2 Biotin Pyridoxal Phosphate Tetrahydrofolatearrow_forward
- create a detailed flow chart or diagram that will illustrate all the important features of the glycolytic pathway. I want you to place in your flow chart or diagram the following important information like: 1. the reactants and products of each step, 2. enzymes involved in each step, 3. important by-products generated in some steps, 4. type of the reaction of each step, 5. and the outline of the two stages of the pathway. Also, discuss briefly (4 sentences) how Galactose and Fructose enter the glycolytic pathway.arrow_forwardcomplex allosteric regulation of the aspartate transcarbamoylase reaction is significant because it links? a) citric acid cycle and catecholamine biosynthesis b)glycolysis and lactic acid fermentation c) opiate with neurotransmitter d) glycolysis and fatty acid metabolism e) amino acid and nitrogenous base metabolismarrow_forwardWhy is gluconeogenesis labeled as enzymatic by-pass reactions?arrow_forward
- The PDH complex is a logical point of regulation in metabolism, as it links two major catabolic processes. Answer the following regarding the complex: a) Explain the advantage of E1, E2 and E3 working as a complex as opposed to separately. b) Explain the purpose of each of the three enzymes and their associated cofactors. c) NADH can inhibit the PDH complex directly or indirectly. What is the purpose of inhibition by NADH? d) Explain the differences between direct and indirect inhibition by NADH. Be sure to indicate the components involved and the mechanism of inhibition (impact on target component).arrow_forward(a) Write a balanced equation for the conversion of aspartate into glucose through the intermediate oxaloacetate. Which coenzymes participate in this transformation? (b) Write a balanced equation for the conversion of aspartate into oxaloacetate through the intermediate fumaratearrow_forwardwhy is biocatalysis over inorganic catalysts in enzyme catalysis favored?arrow_forward
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