Which of the following accurately describes the function of HOTAIR? O It is a long non-coding RNA that regulates transcription of target genes by recruiting the chromatin modification complexes LSD1 and PRC2 It is a scaffold RNA that brings crRNA and CAS9 proteins together for viral defense O It is a miRNA that regulates the transcription of target genes by recruiting chromatin the chromatin modification complexes LSD1 and PRC2 It is an SIRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation O It is a miRNA that regulates the transcription of target genes by repressing their translation It is an SIRNA that regulates the transcription of target genes by repressing their translation It is a miRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation

Which of the following accurately describes the function of HOTAIR? O It is a long non-coding RNA that regulates transcription of target genes by recruiting the chromatin modification complexes LSD1 and PRC2 It is a scaffold RNA that brings crRNA and CAS9 proteins together for viral defense O It is a miRNA that regulates the transcription of target genes by recruiting chromatin the chromatin modification complexes LSD1 and PRC2 It is an SIRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation O It is a miRNA that regulates the transcription of target genes by repressing their translation It is an SIRNA that regulates the transcription of target genes by repressing their translation It is a miRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation

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Description: Which of the following accurately describes the function of HOTAIR?It is a long non-coding RNA that regulates transcription of target genes by recruiting the chromatin modification complexes LSD1 and PRC2It is a scaffold RNA that brings crRNA and CA

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter10: Control Of Gene Expression

Section: Chapter Questions

Problem 2SA: Binding of _______ to _______ in DNA can increase the rate of transcription of specific genes. a....

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Which of the following is characteristic of genes and gene regulation in both bacteria and eukaryotes? (a) promoters (b) non-coding DNA within coding sequences (c) enhancers (d) operons (e) DNA located in a nucleus
Which of the following is an example of positive control? (a) transcription occurs when a repressor binds to an inducer (b) transcription cannot occur when a repressor binds to a corepressor (c) transcription is stimulated when an activator protein binds to DNA (d) a and b (e) a and c
Through alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription of heterochromatin (c) produce related but different proteins in different tissues (d) amplify genes to meet the requirement of high levels of a gene product (e) bind transcription factors to enhancers to activate transcription
IS. Alternative splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative splicing? Alternative splicing increases diversity without increasing genome size Different gene isoforms can be expressed in different tissues Alternative splicing creates shorter mRNA transcripts Different gene isoforms can be expressed during different stages of development.
Binding or ___ to ___ in DNA can increase the rate of transcription of specific genes. a. activators; repressors b. activators; enhancers c. repressors: operators d. repressors: enhancers
Given the following mRNA, write the double-stranded DNA segment that served as the template. Indicate both the 5 and the 3 ends of both DNA strands. Also write out the tRNA anticodons and the amino acid sequence of the protein encoded by the mRNA message. DNA: mRNA: 5-CCGCAUGUUCAGUGGGCGUAAACACUGA-3 protein: tRNA:
A mutation that inactivates the repressor gene of the lac operon results in (a) the continuous transcription of the structural genes (b) no transcription of the structural genes (c) the binding of the repressor to the operator (d) no production of RNA polymerase (e) no difference in the rate of transcription
Control of gene expression in eukaryotic cells occurs at which level(s)? a. only the transcriptional level b. epigenetic and transcriptional levels c. epigenetic, transcriptional, and translational levels d. epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels
The pre-mRNA transcript and protein made by several mutant genes were examined. The results are given below. Determine where in the gene a likely mutation lies: the promoter region, exon, intron, cap on mRNA, or ribosome binding site. a. normal-length transcript, normal-length nonfunctional protein b. normal-length transcript, no protein made c. normal-length transcript, normal-length mRNA, short nonfunctional protein d. normal-length transcript, longer mRNA, shorter nonfunctional protein e. transcript never made
Figure 15.16 Many antibiotics inhibit bacterial protein synthesis. For example, tetracycline blocks the A site on the bacterial ribosome, and chloramphenicol blocks peptidyl transfer. What specific effect would you expect each of these antibiotics to have on protein synthesis? Tetracycline would directly affect: tRNA binding to the ribosome ribosome assembly growth of the protein chain Chloramphenicol would directly affect tRNA binding to the ribosome ribosome assembly growth of the protein chain
Put the following processes in order of their occurrence during expression of a eukaryotic gene: a. mRNA processing c. transcription b. translation d. RNA leaves nucleus
A scientist mutates elF-2 to eliminate its GTP hydrolysis capability. How would this mutated form of elF-2 alter translation? Initiation factors would not be able to bind to mRNA The large ribosomal subunit would not be able to interact with itiRNA transcripts tRNAi-Met would not scan mRNA transcripts for the start codon elF-2 would not be able to interact with the small ribosomal subunit.