EBK ESSENTIALS OF GENETICS
9th Edition
ISBN: 8220102741614
Author: Palladino
Publisher: YUZU
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Chapter 13, Problem 13PDQ
Assuming that each
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Assuming that each nucleotide is 0.34 nm long in mRNA, howmany triplet codes can simultaneously occupy space in a ribosomethat is 20 nm in diameter?
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Chapter 13 Solutions
EBK ESSENTIALS OF GENETICS
Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - Prob. 3CSCh. 13 -
HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 13 - Review the Chapter Concepts list on p. 238. These...Ch. 13 - List and describe the role of all molecular...Ch. 13 - Contrast the roles of tRNA and mRNA during...Ch. 13 - Francis Crick proposed the adaptor hypothesis for...Ch. 13 -
6. During translation, what molecule bears the...Ch. 13 - Summarize the steps involved in charging tRNAs...
Ch. 13 - Each transfer RNA requires at least four specific...Ch. 13 -
9. Explain why the one-gene:one-enzyme hypothesis...Ch. 13 - Prob. 10PDQCh. 13 - Prob. 11PDQCh. 13 - Prob. 12PDQCh. 13 - Assuming that each nucleotide is 0.34 nm long in...Ch. 13 - Review the concept of colinearity in Section 12.5...Ch. 13 -
15. In your opinion, which of the four levels of...Ch. 13 -
16. List and describe the function of as many...Ch. 13 - How does an enzyme function? Why are enzymes...Ch. 13 -
18. Shown in the following table are several...Ch. 13 -
19. Three independently assorting genes are known...Ch. 13 -
20. How would the results in cross (a) of Problem...Ch. 13 - A series of mutations in the bacterium Salmonella...Ch. 13 -
22. The emergence of antibiotic-resistant strains...
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- How does a eukaryotic ribosome select its start codon? Describe the sequences in eukaryotic mRNAs that provide an optimal context for a start codon.arrow_forwardHow does a eukaryotic ribosome select its start codon? Describe the sequences in eukaryotic mRNA that provide an optimal context for a start codon.arrow_forwardSuppose that codons consisted of 4 nucleotides instead of 3 and that there were only 2 different bases. How many amino acids could be encoded by this variant of the genetic code?arrow_forward
- If a codon GCA codes for the amino acid alanine in a prokaryote, what will it code for in a eukaryote? _____arrow_forwardWhy does the sequence ITLIIFGVIAGVIGTILLI more likely to contain a membrane-spanning sequence?arrow_forwardA normal hemoglobin protein has a glutamic acid at position 6; in sickle-cell hemoglobin, this glutamic acid has been replaced by a valine. List all the possible mRNA codons that could be present for each type of hemoglobin. Can a single base change result in a change from Glu to Val in hemoglobin?arrow_forward
- Suppose the codon sequence GUGCAAUUCGAGGCC has a single base pair mutation to GUGCAAUUCAAGGCC. If the old protein sequence was Val-Gln-Phe-Glu-Ala, what will be the new sequence encoded by the mutant gene? ____________________________.arrow_forwardWhat would be the minimum length(approximate number of bases) of an mRNAthat coded for a protein 300 amino acidslong?arrow_forwardIf a prokaryotic gene coding region is 42 nucleotides long, beginning with a start codon and ending with a stop codon, how many amino acids will it have?arrow_forward
- Codons 24 to 66 represent an intron. At what point in the process of protein synthesis are introns removed? What is the name of the enzyme responsible for removing them?arrow_forwardIf a single strand of a gene contains 678 bases, how many amino acids result in the polypeptide prepared from it, assuming every base of the gene is transcribed and then translated?arrow_forwardWhat structural features are shared by spliceosomes(Figures 8-16 and 8-17) and ribosomes? Why are bothstructures used to support the RNA World theory?arrow_forward
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