Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 7, Problem 6Q
Summary Introduction
To review:
The fact that the storage of glucose in muscles and the liver is in the form of glycogen. Further, the advantages of expending energy in glucose
Introduction:
The basic monosaccharide present in an abundant amount in nature is glucose. It is mainly made by plants and algae by the process of photosynthesis. Glucose is not stored in its original configuration. It is stored as starch, amylopecti, nnd glycogen. Glycogen is a polysaccharide, which gets stored in animals, fung, ind bacteria. Glycogen is mainly formed by glucose polymerization.
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A mature glycogen particle typically has 12 tiers of branches with 2 branches per tier and 13 residues per branch. How many glucose residues are in such a particle?
A glycogen polymer and an amylopectin polymer, each containing 100 monosaccharide subunits, are cleaved completely by an enzyme. How many individual glucose molecules are created during this process?
A mature glycogen particle extends out from the homodimer, glycogenin, typically having 12 tiers of chains with two chains per tier and 13 residues per chain.
How many glucose residues are in such a particle?
Chapter 7 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - Prob. 3QCh. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - Prob. 6QCh. 7 - Prob. 7QCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQ
Ch. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - Prob. 20RQCh. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - Prob. 25RQCh. 7 - Prob. 26RQCh. 7 - Prob. 27RQCh. 7 - Prob. 28FBCh. 7 - Prob. 29FBCh. 7 - Prob. 30FBCh. 7 - Prob. 31FBCh. 7 - Prob. 32FBCh. 7 - Prob. 33FBCh. 7 - Prob. 34FBCh. 7 - Prob. 35FBCh. 7 - Prob. 36FBCh. 7 - Prob. 37FBCh. 7 - Prob. 38SACh. 7 - Prob. 39SACh. 7 - Prob. 40SACh. 7 - Prob. 41SACh. 7 - Prob. 42SACh. 7 - Prob. 43TQCh. 7 - Prob. 44TQCh. 7 - Prob. 45TQCh. 7 - Prob. 46TQCh. 7 - Prob. 47TQCh. 7 - Prob. 48TQCh. 7 - Prob. 49TQCh. 7 - Prob. 50TQCh. 7 - Prob. 51TQCh. 7 - Prob. 52TQCh. 7 - Prob. 53TQCh. 7 - Prob. 54TQCh. 7 - Prob. 55TQCh. 7 - Prob. 56TQCh. 7 - Prob. 57TQCh. 7 - Prob. 58TQCh. 7 - Prob. 59TQCh. 7 - Prob. 60TQCh. 7 - Prob. 61TQCh. 7 - Prob. 62TQCh. 7 - Prob. 63TQCh. 7 - Prob. 64TQCh. 7 - Prob. 65TQCh. 7 - Prob. 66TQCh. 7 - Prob. 67TQCh. 7 - Prob. 68TQCh. 7 - Prob. 69TQCh. 7 - Prob. 70TQ
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- Which of the following would result in an increase in the amount of F-2,6-BP? (select all that apply) Group of answer choices high blood glucose activation of fructose bisphosphatase 2 increased phosphofructokinase 2 activity increased glucagon secretion increased phosphorylation of the bifunctional enzymearrow_forwardIs the formation of the acyl-enzyme complex a unimolecular (SN1) or biomolecular(SN2) reaction?arrow_forwardHow many NTP molecules are required to synthesize glucose from each of the following compounds? (a) Glucose 6-phosphate (b) Fructose 1,6-bisphosphate (c) Two molecules of oxaloacetate (d) Two molecules of dihydroxyacetone phosphatearrow_forward
- A mutation has occurred that results in phosphofructokinase not being able to bind ATP in its allosteric site. What impact will this mutation have on the production of ATP in the cell? Select one: a. If no ATP can bind to the allosteric site, then phosphofructokinase will not be able to add the phosphate to fructose-6-phosphate to make fructose-1,6-bisphosphate and glycolysis will not work. So no pyruvate, not cellular respiration. b. If ATP cannot bind to the allosteric site, phosphofructokinase will not be activated to make more ATP by substrate-level phosphorylation. c. No impact on the production but will not be able to effectively shut off over production of ATP with feedback inhibition.arrow_forwardWhy "cellulose is composed of a long, branced chain of B-glucose subunits" is false?arrow_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
- Is the statement: "There is energy requirement for every amino acid added in a growing polypeptide chain." true or false?arrow_forwardHow many molecules of Glucose-1 - phosphate can be generated from this molecule?arrow_forwardWhich are the Two paths are available to this glucose 6-phosphate?arrow_forward
- In addition to glucose, brain cells also need the amino acid phenylalanine to move from the blood and across the blood brain barrier. Brains cells use phenylalanine to produce the neurotransmitter dopamine. Phenylalanine is transported from the blood and into the endothelial cells of the blood brain barrier through the transport protein LAT1, which uses energy to facilitate the movement. In a healthy brain, where is there a higher concentration of phenylalanine? a) In the blood b) In the endothelial cells of the blood brain barrierarrow_forwardHow many high-energy phosphates are generated or consumed in converting (a) 1 mole of glucose to lactate? (b) 2 moles of lactate to glucose?arrow_forwardAnaerobic glycolysis of glucose potentially produces a fewer number of ATPs per glucose moleculein red blood cells than in muscle cells, because -Red blood cells contain bisphosphoglycerate mutase -Red blood cells lack phosphoglycerate kinase -Red blood cells do not have mitochondria -Red blood cells do not have a nucleus Which of the following is likely to be correct if all mutases are completely inhibited? -Removal of glucosyl residues from nonreducing ends of glycogen in the liver is compromised;therefore, release of free glucose into blood from the liver would decrease -Glycerol can be efficiently converted into glucose but cannot be efficiently converted into glucosylresidues in glycogen in the liver -Both A and B -Neither A nor Barrow_forward
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