Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 12, Problem 14P
Define antisense RNA, and describe how it affects the translation of a complementary mRNA. Why is it more advantageous to the organism to stop translation initiation than to inactivate or destroy the gene product after it is produced?
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The initial step in the protein translation is
described by:
release of the initiation factors upon assembly
of the initiation complex
binding of mRNA to the smaller subunit of the
ribosome
delivery of an aminoacyl-tRNA to the A site of
the ribosome
formation of the aminoacyl-tRNA
Researchers are studying the mechanism of the antibiotic chloramphenicol. They know that it prevents the formation of peptide bonds during translation. A model of the translation process is shown in the diagram.
Which of the following describes where in the model chloramphenicol acts to interfere with the production of proteins from DNA?
during initiation
during elongation
during termination
during protein release
During initiation of translation, what protein is attached to the mRNA?
Initiation factors
Small ribosomal subunit
Large ribosomal subunit
Transcription factor
Chapter 12 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 12 - 12.1 Bacterial genomes frequently contain groups...Ch. 12 - Transcriptional regulation of operon gene...Ch. 12 - Why is it essential that bacterial cells be able...Ch. 12 - Identify similarities and differences between an...Ch. 12 - The transcription of -galactosidase and permease...Ch. 12 - 12.6 Is attenuation the product of an allosteric...Ch. 12 - The trpL region contains four repeated DNA...Ch. 12 - The CAP binding site in the lac promoter is the...Ch. 12 - What role does cAMP play in transcription of lac...Ch. 12 - How would a cap- mutation that produces an...
Ch. 12 - Explain the circumstances under which attenuation...Ch. 12 - Consider the transcription of genes of the...Ch. 12 - Describe the lytic and lysogenic life cycles of ...Ch. 12 - 12.14 Define antisense RNA, and describe how it...Ch. 12 - 12.15 Attenuation of trp operon transcription is...Ch. 12 - 12.16 In the lac operon, what are the likely...Ch. 12 - Identify which of the following lac operon haploid...Ch. 12 - Prob. 18PCh. 12 - 12.19 List possible genotypes for lac operon...Ch. 12 - Suppose each of the genotypes you listed in parts...Ch. 12 - 12.21 Four independent mutants (mutants A to D)...Ch. 12 - Suppose the lac operon partial diploid...Ch. 12 - What is a riboswitch? Describe the riboswitch...Ch. 12 - 12.24 A repressible operon system, like the trp...Ch. 12 - 12.25 What is the likely effect of each of the...Ch. 12 - 12.26 Suppose that base substitution mutations...Ch. 12 - 12.27 Two different mutations affect. Mutant...Ch. 12 - How would mutations that inactivate each of the...Ch. 12 - The bacterial insertion sequence IS 10 uses...Ch. 12 - For an E. coli strain with the lac operongenotype...Ch. 12 - 12.31 How could antisense RNA be used as an...Ch. 12 - 12.32 Section describes the function of tRNA...Ch. 12 - The following hypothetical genotypes have genes A,...Ch. 12 - 12.34 Northern blot analysis is performed on...Ch. 12 - Prob. 35PCh. 12 - Prob. 36PCh. 12 - 12.37 The electrophoresis gel shown in part (a) is...
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- Researchers are studying the mechanism of the antibiotic chloramphenicol. They know that it prevents the formation of peptide bonds during translation. A model of the translation process is shown in the diagram. Which of the following describes where in the model chloramphenicol acts to interfere with the production of proteins from DNA? A - during initiationB - during elongationC = during terminationD = during protein releasearrow_forwardDescribe the steps that occur during the initiation, elongation, and termination stages of translation.arrow_forwardList the three types of RNA directly involved in translation.arrow_forward
- The ribosome is the target for many important antibiotics. Distinct antibiotics inhibit various steps in the translation process. Please specify which step of the translation (one short sentence is sufficient) each antibiotic below targets (ex: kasugamycin – inhibits formation of the initiation complex) chloramphenicol tetracycline erythromycin aminoglycosides such as kanamycinarrow_forwardDefine, explain, and differentiate between, the processes of transcription and translation. What enzymes or sub-cellular structures are responsible for carrying out these processes?arrow_forwardFor each of the following initiation factors, how would eukaryoticinitiation of translation be affected if it were missing?A. eIF2B. eIF4C. eIF5arrow_forward
- Describe in detail all of the steps necessary to carry out translation. Amino acids, mRNA, 30S ribosome, 50S ribosome, tRNA, protein chain, E site, P site, and A site.arrow_forwardIdentify whether each of the following descriptions applies to typical prokaryotic genomes only, typical eukaryotic genomes only, both, or neither, according to lecture. Answer options may be used more than once or not at all. Composed of double-stranded DNA only. Each chromosome has a centromere. Species with larger genomes have more genes. [Choose ] [Choose ] prokaryotes only neither eukaryotes or prokaryotes eukaryotes only both prokaryotes and eukaryotes [Choose ]arrow_forwardIndicate which of the following items are associated with transcription or translation. This could be in prokaryotes or eukaryotes, or both. Group of answer choices: Translation OR Transcription Sigma binds to the promoter mRNA binds to the small ribosomal subunit Spliceosomes remove introns and splice together exons Nucleotides are added from the 5' to 3' end tRNA anticodon binds to the corresponding mRNA codon STOP codon results in terminationarrow_forward
- The relaxation of base-paring rules between the TRNA and MRNA is termed as Answer:arrow_forwardDescribe the process of RNA editing.arrow_forwardUse the numbers below to indicate the correct order of events (from left to right) during the process of translation initiation in bacteria. large ribosomal subunit binds to the complex. IF3 is released. The small ribosomal subunit associated with IF1, IF2, and IF3 binds to the Shine-Dalgarno sequence on the mRNA. tRNA charged with f-methionine binds to the AUG codon at the P site. IF1 and IF2 are released, leaving the A site available for the second charged-tRNA to bind the codon at the A site. 3 1 5 4 2 2 1 4 5 3 1 3 5 2 4 3 4 2 1 5 4 2 1 3 5arrow_forward
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