(2pts) Which of the following statements does NOT accurately describe enhancer sequences: A. Enhancer sequences can...
- (2pts) Which of the following statements does NOT accurately describe enhancer sequences:
A. Enhancer sequences can be located far away from the promoter that it regulates
B. Enhancer sequences are cis-acting regulatory elements
C. Enhancer sequences can be located either upstream (5’) or downstream (3’) the gene
D.Enhancer sequences are located within 10 to 35 base pairs upstream of the promoter
When bound by transcription factors, enhancer sequences enhance gene expression
Homework Answers
Answer:
"C"
is correct( Enhancer sequences can be located either
upstream (5’) or downstream (3’) the
gene)
- Enhancer sequences are regulatory DNA sequences that, when bound by specific proteins called transcription factors, enhance the transcription of an associated gene.
- Enhancers are cis-acting Enhances sequence turn on the transcription and not translation.
- They can be located upstream of a gene, within the coding region of the gene, downstream of a gene, or may be thousands of nucleotides away.
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(2pts) Which of the following statements does NOT accurately
describe enhancer sequences:
A. Enhancer sequences can...
Question 4 Which of the following is TRUE regarding enhancer elements? a. they bind to transcription...
Question 4 Which of the following is TRUE regarding enhancer elements? a. they bind to transcription factors b. enhancer elements activating a specific gene sequence is not functional in all cell types c. they can exist on either side of the gene they are activating d. they cannot function unless they are located far from the sequence they control e. all are true
18. Which of the following statements correctly describe the role of transcription in the initiation of...
18. Which of the following statements correctly describe the role of transcription in the initiation of transcription in eukaryotes? A. Some transcription factors must bind to the promoter before RNA polymerası bind. B. Some transcription factors must bind to the promotor proximal element to en significant levels of mRNA production C. Some transcription factors can bind to enhancer elements thousands of base away from the gene D. Some transcription factors can bind to silencer elements that might be locate thousands...
1. trans-acting factors are able to regulate target genes from any chromosome, whereas cis-acting elements can...
1. trans-acting factors are able to regulate target genes from any chromosome, whereas cis-acting elements can only regulate genes located in the same chromosome. a. True only in operons. In Eukaryotic systems, trans-acting factors only regulate genes in the same chromosome. b. True only in Eukaryotes. Prokaryotes don’t have cis-acting elements. c. True for any organism. d. False. The statement is erroneous 2. Unlike activators, repressors never affect chromatin structure. Repressors inhibit transcription only by binding to the binding sites...
Looking at the diagram of transcription in eukaryotes and using the information provided, how could the...
Looking at the diagram of transcription in eukaryotes and using the
information provided, how could the expression of lactase RNA be
turned on and off by transcription factors, activators and
repressors?
Styles Font Paragraph Activators bind to genes at Rapressors bind to genes seauences and at shaoser sequences and The expression of RNA in eukaryotes is initiated by the binding of basal transcription factors to the promoter sequence of a gene. This leads to the recruitment of RNA polymerase to...
2.Base changes in which of the following can have evolutionary sequences? -Non-coding RNA -mRNA -Promoter sequences...
2.Base changes in which of the following can have evolutionary sequences? -Non-coding RNA -mRNA -Promoter sequences -Protein coding gene -Cis-regulatory module
The following is a diagram of the LCT (lactase gene) gene regulation system in humans. When...
The following is a diagram of the LCT (lactase gene) gene
regulation system in humans. When the LCT gene is transcriptionally
active, the cell produces the enzyme lactase, which is
needed to digest the lactose in many dairy products. Based on what
you know about enhancers and promoters from your reading, predict
how the following scenarios might influence LCT gene expression and
thus lactase production in cells:
The enhancer sequence is inverted, but remains intact so that
Oct1 still binds...
What control elements regulate expression of the mPGES-1 gene? The promoter of a gene includes the...
What control elements regulate expression of the mPGES-1 gene? The promoter of a gene includes the DNA immediately upstream of the transcription start site, but expression of the gene can also be affected by control elements. These can be thousands of base pairs upstream of the promoter, grouped in an enhancer. Because the distance and spacing of these control elements make them difficult to identify, scientists begin by deleting sections of DNA that contain possible control elements and measuring the...
Which of the following is NOT a function of transcription that requires the activity from subunits...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
Please explain your answers as best as you can. I want to be able to understand....
Please explain your answers as best as you can. I want to be
able to understand.
The first drawing below represents the transcription start site and upstream region of a eukaryotic gene. In addition, four deletion constructs are shown, where the unboxed area represents a deletion of upstream DNA. Note the location of the +1 start site and the promoter, which includes the TATA box Non-deleted DNA template and DNA of the various deletions constructs were added to both systems...
Question 15 Not yet answered Which of the following is TRUE about eukaryotic enhancers: An enhancer...
Question 15 Not yet answered Which of the following is TRUE about eukaryotic enhancers: An enhancer Points out of 2.50 P Flag question Select one: O a. Is a DNA sequence that can be far away from the promoter and where transcriptional activators bind O b. Is an operator DNA sequence where the Mediator complex binds o c. Is a DNA sequence where the general transcription factors bind O d. Is a protein that binds at the promoter and activates...
Question 4 Which of the following is TRUE regarding enhancer elements? a. they bind to transcription factors b. enhancer elements activating a specific gene sequence is not functional in all cell types c. they can exist on either side of the gene they are activating d. they cannot function unless they are located far from the sequence they control e. all are true
18. Which of the following statements correctly describe the role of transcription in the initiation of transcription in eukaryotes? A. Some transcription factors must bind to the promoter before RNA polymerası bind. B. Some transcription factors must bind to the promotor proximal element to en significant levels of mRNA production C. Some transcription factors can bind to enhancer elements thousands of base away from the gene D. Some transcription factors can bind to silencer elements that might be locate thousands...
Looking at the diagram of transcription in eukaryotes and using the
information provided, how could the expression of lactase RNA be
turned on and off by transcription factors, activators and
repressors?
Styles Font Paragraph Activators bind to genes at Rapressors bind to genes seauences and at shaoser sequences and The expression of RNA in eukaryotes is initiated by the binding of basal transcription factors to the promoter sequence of a gene. This leads to the recruitment of RNA polymerase to...
The following is a diagram of the LCT (lactase gene) gene
regulation system in humans. When the LCT gene is transcriptionally
active, the cell produces the enzyme lactase, which is
needed to digest the lactose in many dairy products. Based on what
you know about enhancers and promoters from your reading, predict
how the following scenarios might influence LCT gene expression and
thus lactase production in cells:
The enhancer sequence is inverted, but remains intact so that
Oct1 still binds...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
Please explain your answers as best as you can. I want to be
able to understand.
The first drawing below represents the transcription start site and upstream region of a eukaryotic gene. In addition, four deletion constructs are shown, where the unboxed area represents a deletion of upstream DNA. Note the location of the +1 start site and the promoter, which includes the TATA box Non-deleted DNA template and DNA of the various deletions constructs were added to both systems...
Question 15 Not yet answered Which of the following is TRUE about eukaryotic enhancers: An enhancer Points out of 2.50 P Flag question Select one: O a. Is a DNA sequence that can be far away from the promoter and where transcriptional activators bind O b. Is an operator DNA sequence where the Mediator complex binds o c. Is a DNA sequence where the general transcription factors bind O d. Is a protein that binds at the promoter and activates...
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