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 17, Problem 26RQ
Summary Introduction
To review:
The structural features responsible for the stability of the ribonucleic acid (RNA).
Introduction:
RNA is the single-stranded polynucleotidechain formed after the transcription of the deoxyribonucleic acid (DNA). It is named RNA because it has a ribose moiety, in which the hydroxyl moiety is present at the 2’ carbon. The nitrogenous bases incorporated in the RNA are adenine, guanine, uracil, and cytosine. Unlike DNA, it has uracil instead of thymine.
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Chapter 17 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 17 - Prob. 1QCh. 17 - Prob. 2QCh. 17 - Prob. 3QCh. 17 - Prob. 4QCh. 17 - Prob. 5QCh. 17 - Prob. 6QCh. 17 - Prob. 7QCh. 17 - Prob. 8QCh. 17 - Prob. 1RQCh. 17 - Prob. 2RQ
Ch. 17 - Prob. 3RQCh. 17 - Prob. 4RQCh. 17 - Prob. 5RQCh. 17 - Prob. 6RQCh. 17 - Prob. 7RQCh. 17 - Prob. 8RQCh. 17 - Prob. 9RQCh. 17 - Prob. 10RQCh. 17 - Prob. 11RQCh. 17 - Prob. 12RQCh. 17 - Prob. 13RQCh. 17 - Prob. 14RQCh. 17 - Prob. 15RQCh. 17 - Prob. 16RQCh. 17 - Prob. 17RQCh. 17 - Prob. 18RQCh. 17 - Prob. 19RQCh. 17 - Prob. 20RQCh. 17 - Prob. 21RQCh. 17 - Prob. 22RQCh. 17 - Prob. 23RQCh. 17 - Prob. 24RQCh. 17 - Prob. 25RQCh. 17 - Prob. 26RQCh. 17 - Prob. 27RQCh. 17 - Prob. 28RQCh. 17 - Prob. 29RQCh. 17 - Prob. 30RQCh. 17 - Prob. 31RQCh. 17 - Prob. 32RQCh. 17 - Prob. 33RQCh. 17 - Prob. 34RQCh. 17 - Prob. 35RQCh. 17 - Prob. 36RQCh. 17 - Prob. 37RQCh. 17 - Prob. 38RQCh. 17 - Prob. 39RQCh. 17 - Prob. 40RQCh. 17 - Prob. 41FBCh. 17 - Prob. 42FBCh. 17 - Prob. 43FBCh. 17 - Prob. 44FBCh. 17 - Prob. 45FBCh. 17 - Prob. 46FBCh. 17 - Prob. 47FBCh. 17 - Prob. 48FBCh. 17 - Prob. 49FBCh. 17 - Prob. 50FBCh. 17 - Prob. 51SACh. 17 - Prob. 52SACh. 17 - Prob. 53SACh. 17 - Prob. 54SACh. 17 - Prob. 55SACh. 17 - Prob. 56TQCh. 17 - Prob. 57TQCh. 17 - Prob. 58TQCh. 17 - Prob. 59TQCh. 17 - Prob. 60TQCh. 17 - Prob. 61TQCh. 17 - Prob. 62TQCh. 17 - Prob. 63TQCh. 17 - Prob. 64TQCh. 17 - Prob. 65TQCh. 17 - Prob. 66TQCh. 17 - Prob. 67TQCh. 17 - Prob. 68TQCh. 17 - Prob. 69TQCh. 17 - Prob. 70TQCh. 17 - Prob. 71TQCh. 17 - Prob. 72TQCh. 17 - Prob. 73TQ
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- Why does RNA use uracil as a complementary base pair with adenine instead of thymine?arrow_forwardWhat is the structural difference between the pentose sugars in DNA and RNA?arrow_forwardLactose permease, a protein of E. coli, is composed of a singlepolypeptide that is 417 amino acids in length. By convention, theamino acids within a polypeptide are numbered from the aminoterminalend to the carboxyl-terminal end. Are the following questionsabout lactose permease true or false?A. Because the sixty-fourth amino acid is glycine and the sixty- eighth amino acid is aspartic acid, the codon for glycine,64, is closer to the 3′ end of the mRNA than the codon for aspartic acid, 68.B. The mRNA that encodes lactose permease must be greater than1241 nucleotides in length.arrow_forward
- What property of RNA makes it suitable for use as a ribozyme? For what reason do organisms not produce enough DNA enzymes?arrow_forwardWhy is selenocysteine called the 21st amino acid when there are many more amino acids found than the 20 basic ones coded for by the genetic code?arrow_forwardThe purine and pyrimidine rings are built from the amino acids aspartate,glutamine, and glycine. Why is serine required for the synthesis of deoxyribonucleotides?arrow_forward
- What is the difference between a heteroglycan and ahomoglycan? Give examples.arrow_forwardWhat is unusual about the answers for Questions 13k, 13l, 13m, and 13n? Because the multiple codons exist for most amino acids, the genetic code is said to be _____________.arrow_forwardAs we focused on the translation of mRNA into proteins as well as on protein structure and function. Along the way, we found many opportunities to consider the methods and reasoning by which much of this informationwas acquired. From the explanations given in the chapter,what answers would you propose to the following fundamentalquestion What experimental information verifies that certain codonsin mRNA specify chain termination during translation?arrow_forward
- In some proteins, the side chain of serine appears to undergo ionization. Explain why ionization would be facilitated by the presence of an aspartate residue nearby.arrow_forwardThis is the three-letter code for the amino acid that is the most geometrically constricted amino acid within a peptide sequence.arrow_forwardWhat function does a guanine nucleotide exchange factor(GEF) serve?arrow_forward
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