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Histone acetylases (HATS) promote gene expression in which of the following ways? They promote the binding...
Histone de-acetylases prevent further gene expression in which of the following ways? Restoring the charge attraction...
Histone de-acetylases prevent further gene expression in which of the following ways? Restoring the charge attraction between histones and DNA Preventing transcription factor binding Lessening the charge attraction between histones and DNA Adding a chemical tag to the DNA that silences it
Choose the cis-elements. Click on the cis regulatory elements only. Control of eukaryotic gene expression (gene...
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.
3. Which of the following is not a good example of a housekeeping protein in eukaryotic...
3. Which of the following is not a good example of a housekeeping protein in eukaryotic cells? a)DNA polymerase b)histones c)RNA polymerase 4)hemoglobin Explanation: 4. Which of the following statements about histones is true? a. Histones activate transcription when bound to the promoter, b. Although RNA polymerase can access DNA packed around histones, the general transcription factors and transcriptional regulators cannot. c. Histone acetyltransferases affect transcription by adding acetyl groups to histones and altering chromatin structure to allow accessibility to...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
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...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete each sentence using the words provided.In some cells, DNA combines with proteins to form a substance calledThe lowest level of chromatin structure consists of DNA wrapped twice around a group of histones to form a(n)The formation of nucleosomes may block the binding of transcription factors and RNA polymerase II to theThe structure of chromatin can be modified by altering either the DNA or the...
Q1)Which of the following is not involved in control of gene expression in eukaryotes? A. Change...
Q1)Which of the following is not involved in control of gene expression in eukaryotes? A. Change to DNA sequence. B. Alternative splicing. C. Export of mRNA from the nucleus. D. Transcriptional repression. E. Destruction of mRNA Q2) Trans-acting regulators of gene expression include? A. promoters. B. histone deacetylases C. introns D. silencers E. the TATA box. Q3) Gene regulation in eukaryotes often involves which of the following, which are not also used by prokaryotes? A.RNA polymerase B.Transcription factors C.Histone modification...
In female mice, both the glucocorticoid (cortisol) receptor and the estrogen receptor are expressed in liver...
In female mice, both the glucocorticoid (cortisol) receptor and the estrogen receptor are expressed in liver cells (hepatocytes). The control element to which the glucocorticoid receptor binds is a short-strip of DNA that can accommodate the binding of the glucocorticoid receptor dimer. This control element is called a glucocorticoid response element (GRE). It is located1000 bp downstream from the poly-A site for the PEPCK gene. When this gene is activated by cortisol, it helps the hepatocyte to release glucose into...
need to know correct answers 26. B. Which of the following enzymes is associated with the...
need to know correct answers
26. B. Which of the following enzymes is associated with the repression of transcription? methyl transferase DNA polymerasex acetyl transferase histone kinase none of the above Section 2 - True/False (2 points each) 27. TFIIB regulates tissue or cell type-specific transcription 28._1 Eukaryotes have three different RNA polymerases that each can transcribe non-protein coding genes. 29. T The P site of the ribosome refers to peptidyl. be For T heoph UND 30._F_The input genetic material...
allll pleas Question 14 (1 point) Eukaryotes modify a primary RNA transcript to generate a final...
allll pleas
Question 14 (1 point) Eukaryotes modify a primary RNA transcript to generate a final mRNA product. Which of the following modifications is something that occurs to eukaryotic RNA (which one is correct): OA) removing exons from the transcript B) adding introns into the transcript C) adding a poly(A) tail to the transcript by poly(A) polymerase OD) adding start codons to the transcript after its synthesis E) removing a 5' cap from the transcript Question 18 (1 point) Origins,...
Histone de-acetylases prevent further gene expression in which of the following ways? Restoring the charge attraction between histones and DNA Preventing transcription factor binding Lessening the charge attraction between histones and DNA Adding a chemical tag to the DNA that silences it
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.
3. Which of the following is not a good example of a housekeeping protein in eukaryotic cells? a)DNA polymerase b)histones c)RNA polymerase 4)hemoglobin Explanation: 4. Which of the following statements about histones is true? a. Histones activate transcription when bound to the promoter, b. Although RNA polymerase can access DNA packed around histones, the general transcription factors and transcriptional regulators cannot. c. Histone acetyltransferases affect transcription by adding acetyl groups to histones and altering chromatin structure to allow accessibility to...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete each sentence using the words provided.In some cells, DNA combines with proteins to form a substance calledThe lowest level of chromatin structure consists of DNA wrapped twice around a group of histones to form a(n)The formation of nucleosomes may block the binding of transcription factors and RNA polymerase II to theThe structure of chromatin can be modified by altering either the DNA or the...
need to know correct answers
26. B. Which of the following enzymes is associated with the repression of transcription? methyl transferase DNA polymerasex acetyl transferase histone kinase none of the above Section 2 - True/False (2 points each) 27. TFIIB regulates tissue or cell type-specific transcription 28._1 Eukaryotes have three different RNA polymerases that each can transcribe non-protein coding genes. 29. T The P site of the ribosome refers to peptidyl. be For T heoph UND 30._F_The input genetic material...
allll pleas
Question 14 (1 point) Eukaryotes modify a primary RNA transcript to generate a final mRNA product. Which of the following modifications is something that occurs to eukaryotic RNA (which one is correct): OA) removing exons from the transcript B) adding introns into the transcript C) adding a poly(A) tail to the transcript by poly(A) polymerase OD) adding start codons to the transcript after its synthesis E) removing a 5' cap from the transcript Question 18 (1 point) Origins,...
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