which ofthe following functions in the regulation of gene expression? nucleases, telomeres, plasmids, euchromatin, nucleoids
which ofthe following functions in the regulation of gene expression? nucleases, telomeres, plasmids, euchromatin, nucleoids
Homework Answers
Euchromatin
Euchromatin is a lightly packed form of chromatin (DNA, RNA, and protein) that is enriched in genes, and is often (but not always) under active transcription. Euchromatin comprises the most active portion of the genome within the cell nucleus. 92% of the human genome is euchromatic.
DNA methylation is a widespread mechanism for epigenetic influence on gene expression and is seen in bacteria and eukaryotes and has roles in heritable transcription silencing and transcription regulation. In eukaryotes the structure of chromatin, controlled by the histone code, regulates access to DNA with significant impacts on the expression of genes in euchromatin and heterochromatin areas.
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which ofthe following functions in the regulation of gene
expression? nucleases, telomeres, plasmids, euchromatin,
nucleoids
Which of the following bacteria functions could be acquired through lateral gene flow of plasmids? a....
Which of the following bacteria functions could be acquired through lateral gene flow of plasmids? a. Production of enterotoxins b. Resistance to antibiotics c. Ability to oxidize glucose d. A and B are correct Polymyxin B is an antibiotic that binds to lipopolysaccharide. What microorganisms will be susceptible to this antibiotic? Gram Positive microorganisms Gram Negative microorganisms Gram Positive and Negative microorganisms None of the above
Which of the following changes to DNA can be part of epigenetic regulation of gene expression?...
Which of the following changes to DNA can be part of epigenetic regulation of gene expression? Choose both correct answers. degradation of mRNA that is no longer needed methylation of DNA acetylation alternate mRNA splicing
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic...
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic cells, transcriptional activators often work by recruiting the transcriptional macinery to gene promoters DNA methylation is an example of an epigenetic mark that can be inherited Acetylation of histones can result in a more open chromatin structure to allow transcription to occur Different genes can be turned off or on between different organs or stages of development Transcription factor DNA sequences are bound by...
Question 18 Which of the following statements is FALSE? Euchromatin is replicated throughout the S phase...
Question 18 Which of the following statements is FALSE? Euchromatin is replicated throughout the S phase while heterochromatin is replicated late in the Sphase. Euchromatin is found in the arms of chromosomes while heterochromatin is found at the centromeres, telomeres, and other specific locations Euchromatin has higher numbers of genes than heterochromatin. Euchromatin has fewer crossovers than heterochromatin. Euchromatin has fewer repetitive sequences than heterochromatin.
Which aspect of cell biology is NOT involved in the regulation of gene expression? Chromatin remodeling...
Which aspect of cell biology is NOT involved in the regulation of gene expression? Chromatin remodeling The make-up of a promoter Alternative splicing The overall size of RNA polymerase Presence of specific transcription factors
What are the principles of regulation of gene expression in prokaryotes? use examples.
What are the principles of regulation of gene expression in prokaryotes? use examples.
Briefly describe the five levels of regulation of eukaryotic gene expression
Briefly describe the five levels of regulation of eukaryotic gene expression
QUESTION 19 19. The following is an example of posttranslational regulation of gene expression: A. A....
QUESTION 19 19. The following is an example of posttranslational regulation of gene expression: A. A. Control of transcription by a repressor B. A. Control of transcription by an inducer. Oc. A. Alternative splicing of RNA. D. A. Controlling transport of mRNA from the nucleus. E. A. Phopsorylation of protein.
Regulation of Gene Expression in Eukaryotes In all organisms, certain genes are expressed at any given...
Regulation of Gene Expression in Eukaryotes In all organisms, certain genes are expressed at any given time while other genes are not. Both prokaryotes and eukaryotes regulate gene expression at the transcription stage. However the greater complexity of eukaryotic cells makes it possible for gene expression to be regulated at many other stages as well. The diagram below shows different stages at which gene expression may be regulated in eukaryotes. nucleus chro modifica anscription RNA processing cytoplasm degradation protein processing...
Coordinate regulation of gene expression is important both in bacteria and eukaryotes. Operons are used to...
Coordinate regulation of gene expression is important both in bacteria and eukaryotes. Operons are used to co-ordinate gene expression in bacteria but NOT eukaryotes. Explain why operons strategy does not work in eukaryotes.
Question 18 Which of the following statements is FALSE? Euchromatin is replicated throughout the S phase while heterochromatin is replicated late in the Sphase. Euchromatin is found in the arms of chromosomes while heterochromatin is found at the centromeres, telomeres, and other specific locations Euchromatin has higher numbers of genes than heterochromatin. Euchromatin has fewer crossovers than heterochromatin. Euchromatin has fewer repetitive sequences than heterochromatin.
QUESTION 19 19. The following is an example of posttranslational regulation of gene expression: A. A. Control of transcription by a repressor B. A. Control of transcription by an inducer. Oc. A. Alternative splicing of RNA. D. A. Controlling transport of mRNA from the nucleus. E. A. Phopsorylation of protein.
Regulation of Gene Expression in Eukaryotes In all organisms, certain genes are expressed at any given time while other genes are not. Both prokaryotes and eukaryotes regulate gene expression at the transcription stage. However the greater complexity of eukaryotic cells makes it possible for gene expression to be regulated at many other stages as well. The diagram below shows different stages at which gene expression may be regulated in eukaryotes. nucleus chro modifica anscription RNA processing cytoplasm degradation protein processing...
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