8. Control of gene expression in eukaryotic cells occurs at which level(s)?
A. only the transcriptional level |
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B. epigenetic and transcriptional levels |
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C. epigenetic, transcriptional, and translational levels |
Control of gene expression in eukaryotic cells occurs at epigenetic, transcriptional, and translational levels.
expression of gene in eukaryotic cell occurs at transcriptional level(during mRNA synthesis, modifications in mRNA) translation level( at time of synthesis of proteins and epigeneitc level ( post translational modifications of proteins)
8. Control of gene expression in eukaryotic cells occurs at which level(s)? A. only the transcriptional...
Choose the cis-elements. Click on the cis regulatory elements only. Control of eukaryotic gene expression (gene control) can occur at multiple levels from DNA accessibility to post-translational changes to polypeptides/proteins. Silencers, repressors, transcription factors, activators, enhancers, insulators histone acetyltransferases (HATS), histone deacetylases (HDACs) histone remodellers and DNA methyltransferases all play a role in gene control.
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...
This short RNA (miRNA) is found in eukaryotic cells. miRNAs are post-transcriptional regulators that bind to complementary sequences on target mRNAs, resulting in enhancement of mRNA degradation by nucleases and/or _________. For the study of gene functions, artificial introduction of miRNA (siRNA) is performed to cells or animals. This experimental technique is called gene silencing and or _________, compared to the gene-deleting transgenic techniques. Select one: a. transcriptional repression ;;;; Knock-Down b. translational repression ;;;; Knock-Down c. transcriptional repression ;;;;...
Compare and contrast between pro and eukaryotic cells for their levels of gene expression. Additional level of controls in eukaryotes.
A gene-regulation strategy that is unique to eukaryotic cells is __________. See Section 19.1 ( page 380) . A. transcriptional regulation B. mRNA processing C. post-translational regulation D. Translational regulation
Which of the following correctly describes eukaryotic transcriptional control? a. A transcription factor is a DNA molecule that helps RNA polymerase to bind to the enhancer of a specific gene. b. An enhancer is a protein that encourages gene expression by binding to the DNA. c. The promoter is the region of RNA where DNA polymerase will bind to begin transcription. d. The interaction of multiple transcription factors may be required in order to transcribe a...
Sample Question: Which of the following types of gene expression control is unlikely to be used in bacteria? a) Transcriptional control b) Translational control c) RNA processing control d) Protein activity control
Choose two (2) of the mechanisms of gene expression regulation in eukaryotic cells denoted by rows shown (7 possible in the Figure below. I will only grade your first to for completeness and will NOT grade any more that you write. If you do an EXTRAODINARY job on your answers, you may ear bonus points For each of your choices answer the following 4 questions using COMPLETE sentences 1. What are the base structural differences between molecules (pink, blue or...
Match each term associated with genes and control of gene expression with the appropriate description. A transcriptional unit" that consists of promoter multiple genes under the control of a single regulatory element. A transcriptional regulatory protein (prokaryotic or eukaryotic) which works by turning on or increasing gene transcription. activator The region of a gene to which RNA polymerase binds. Enhancer A transcriptional regulatory protein prokaryotic or eukaryotic) which works by turning off or decreasing gene transcription. repressor A molecule that...
In eukaryotic cells, there are specific transcription factors (activators) that regulate gene expression. Describe the organization of eukaryotic genes (i.e. promoters/enhancers) and how transcription factors are able to control gene expression and enzyme activity. a) Throughout the course we discussed the enzyme lactase and how it is differently regulated (and therefore expressed) in different human populations. Describe how this gene is differently expressed in different populations and when this/these change(s) are predicted to have taken place. b) Differential gene expression...