Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
12th Edition
ISBN: 9780134811390
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 14, Problem 10PDQ
What are isoaccepting tRNAs? Assuming that there are only 20 different aminoacyl tRNA synthetases but 31 different tRNAs, speculate on parameters that might be used to ensure that each charged tRNA has received the correct amino acid.
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Chapter 14 Solutions
Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
Ch. 14 - Prob. 1NSTCh. 14 - A series of mutations in the bacterium Salmonella...Ch. 14 - HbS results from the substitution of valine for...Ch. 14 - Given that a faulty ribosomal protein is the...Ch. 14 - A couple with a child affected with DBA undergoes...Ch. 14 - Prob. 3CSCh. 14 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 14 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 14 - Contrast the roles of tRNA and mRNA during...Ch. 14 - Francis Crick proposed the adaptor hypothesis for...
Ch. 14 - During translation, what molecule bears the codon?...Ch. 14 - The chain of eukaryotic hemoglobin is composed of...Ch. 14 - Assuming that each nucleotide in an mRNA is 0.34...Ch. 14 - Summarize the steps involved in charging tRNAs...Ch. 14 - To carry out its role, each transfer RNA requires...Ch. 14 - What are isoaccepting tRNAs? Assuming that there...Ch. 14 - When a codon in an mRNA with the sequence 5-UAA-3...Ch. 14 - Discuss the potential difficulties of designing a...Ch. 14 - Prob. 13PDQCh. 14 - Prob. 14PDQCh. 14 - The synthesis of flower pigments is known to be...Ch. 14 - The study of biochemical mutants in organisms such...Ch. 14 - Explain why the one-gene: one-enzyme concept is...Ch. 14 - Why is an alteration of electrophoretic mobility...Ch. 14 - Prob. 19PDQCh. 14 - Prob. 20PDQCh. 14 - Prob. 21PDQCh. 14 - Prob. 22PDQCh. 14 - Several amino acid substitutions in the and ...Ch. 14 - Define and compare the four levels of protein...Ch. 14 - What are the two common types of protein secondary...Ch. 14 - How do covalent disulfide bonds, hydrogen bonds...Ch. 14 - Prob. 27PDQCh. 14 - List three different types of posttranslational...Ch. 14 - Prob. 29PDQCh. 14 - How does an enzyme function? Why are enzymes...Ch. 14 - Prob. 31PDQCh. 14 - Three independently assorting genes (A, B, and C)...Ch. 14 - How would the results vary in cross (a) of Problem...Ch. 14 - Deep in a previously unexplored South American...Ch. 14 - Many antibiotics are effective as drugs to fight...Ch. 14 - The flow of genetic information from DNA to...Ch. 14 - Prob. 37ESP
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- Describe what two reaction steps are required for the formation of an aminoacyl-tRNA?arrow_forwardHow does the aminoacyl-tRNA synthetase that attaches the amino acid proline know which tRNA to attach the proline to?Question 24 options: A) the synthetase recognizes the sequence of the first 3 bases on the 3' end of the tRNA B) the synthetase reads the anticodon as well as a few other unique bases in tRNAPro C) proline only fits into the 3-dimensional structure of the tRNAPro D) the synthetase randomly chooses a tRNAarrow_forwardWhat is the primary difference betwee class I and class II aminoacyl-tRNA synthetases. a. Class I synthetases acylate the terminal 2’ hydroxyl group of tRNAs; Class II synthetases acylate the terminal 3’ hydroxyl group of tRNAs. b. Class I synthetases acylate the terminal 3’ hydroxyl group of tRNAs; Class II synthetases acylate the terminal 2’ hydroxyl group of tRNAs. c. Class I synthetases acylate tRNAs with hydrophobic amino acids; Class II synthetases acylate tRNAs with polar amino acids. d. Class I synthetases acylate tRNAs with polar amino acids; Class II synthetases acylate tRNAs with hydrophobic amino acids.arrow_forward
- Describe the structural and sequence elements that are common to all tRNA molecules, addressing the function of each of the elements. What forces stabilize the tRNAs' structural features?arrow_forwardWhat are the amino acids carried by tRNAs if their anticodons are either 5'-CAU-3' and 3'-GUC-5'?arrow_forwardThe charging of a tRNA with an amino acid can be represented by the following equation:amino acid + tRNA + ATP → aminoacyl-tRNA + AMP + PPI where PPI is pyrophosphate (see figure 3–40). in the aminoacyl-tRNA, the amino acid and tRNA are linked with a high-energy covalent bond; a large portion of the energy derived from the hydrolysis of ATP is thus stored in this bond and is available to drive peptide bond formation at the later stages of protein synthesis. the free-energy change of the charging reaction shown in the equation is close to zero and therefore would not be expected to favor attachment of the amino acid to tRNA. Can you suggest a further step that could drive the reaction to completion?arrow_forward
- What experimentally derived information led to Holley’s proposal of the two-dimensional cloverleaf model of tRNA?arrow_forwardWhat two reaction steps are required for the formation of an aminoacyl-tRNA?arrow_forwardA tRNA has an anticodon sequence 3′– GGU–5′. Identify the amino acidit is carrying?arrow_forward
- Three E. coli tRNA molecules with the anticodon sequences CGG, OGG , and UGG are charged with the same amino acid. What is the amino acid ?arrow_forwardWhat naturally found amino acyl tRNA synthetase can be used to attach 2-aminobutyric acid to a tRNA? Explain whyarrow_forwardDetermine the codon sequence for the peptide sequence glycylserylcysteinylarginylalanine. How many possibilities are there?arrow_forward
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