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Title: Which of the following is true of the mechanism of transcription attenuation of the trp operon? ... Post by: Tamera on Feb 20, 2018 Which of the following is true of the mechanism of transcription attenuation of the trp operon?
A. The leader peptide mechanism is analogous to a repressor protein. B. The ribosome stalls at the adjacent Trp codons when the levels of tryptophan in the cell are high. C. The stalling of the ribosome at region 1 of the leader sequence inhibits the formation of the terminator structure. D. When sequences 2 and 3 of the leader sequence associate, transcription is terminated prematurely. The main reason that mRNA transcripts are modified at the 5' and 3' ends is: A. to ensure that all nucleotides are phosphorylated. B. to protect the RNA from nucleolytic degradation. C. so that the two ends remain associated with each otherduring transport. D. to guide the removal of introns. Some pathways for replication fork repair lead to the creation of Holliday intermediates behind the reconstituted forks that when resolved by RuvC produce dimeric chromosomes. What enzyme complex can resolve these dimeric chromosomes? A. RecBCD B. XerCD C. RecFOR D. RecA E. resolvase Why is eukaryotic DNA underwound even though eukaryotes lack topoisomerases that can introduce supercoils? What will be an ideal response? What feature of RNA is directly or indirectly responsible for the unique structural properties of RNA? What will be an ideal response? Title: Which of the following is true of the mechanism of transcription attenuation of the trp operon? ... Post by: shy; on Feb 20, 2018 Content hidden
Title: Which of the following is true of the mechanism of transcription attenuation of the trp operon? ... Post by: Tamera on Feb 20, 2018 Now I'm convinced to ask more questions :)
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