All of the following can be found in chromatin except Select one: a. DNA b. histones...
All of the following can be found in chromatin except
Select one:
a. DNA
b. histones
c. RNA
d. transcription factors
Hint: it's not d.
Homework Answers
All of the following are found in chromatin except C. RNA
Rather than RNA , DNA,histones, transcription factors found in chromatin.
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All of the following can be found in chromatin except
Select one:
a. DNA
b. histones...
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...
All the following statements about microsatellite DNA are true except: Select one: a. It consists of...
All the following statements about microsatellite DNA are true except: Select one: a. It consists of a repeat length of 1–13 base pairs. b. It can cause neurological diseases such as myotonic dystrophy. c. It can occur within transcription units. d. all of the above
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...
DNA that is transcriptionally active Select one: a. is more susceptible to DNase I digestion b....
DNA that is transcriptionally active Select one: a. is more susceptible to DNase I digestion b. is tightly packed into a solenoid arrangement c. contains unacetylated histones d. is more condensed than nontranscribed DNA Hint: it's not c.
In RNA interference studies, the double-stranded RNA Select one: a. disrupts the target DNA sequence b....
In RNA interference studies, the double-stranded RNA Select one: a. disrupts the target DNA sequence b. results in the destruction of the target mRNA c. destroys the target protein d. all of the above Hint: it's not D
What is an “enhancer”? A. a small region of DNA B. a place in the DNA...
What is an “enhancer”? A. a small region of DNA B. a place in the DNA where transcription factors bind C. an open/relaxed region of chromatin D. all of the above Which of the following does not occur before a eukaryotic mRNA is exported from the nucleus? The ribosome binds to the mRNA. The mRNA is polyadenylated at its 3′ end. 7-methylguanosine is added in a 5′-to-5′ linkage to the mRNA. RNA polymerase dissociates.
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication...
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication of the lagging strand is discontinuous B. Transcription factors DNA replication of the lagging strand is continuous C. Helicases D. Histones E. DICER 2. Which of the following statements is true? A. DNA replication of the leading strand is discontinuous B. DNA replication of the lagging strand is discontinuous C. DNA replication of the leading strand is dispersive D. DNA replication of the lagging...
While much remains to be learned about the role of nucleosomes and chromatin structure and function,...
While much remains to be learned about the role of nucleosomes
and chromatin structure and function, recent research indicates
that in vivo chemical modification of histones is
associated with changes in gene activity. One study determined that
acetylation of H3 and H4 is associated with 21.1 percent and 13.8
percent increases in yeast gene activity, respectively, and that
histones associated with yeast heterochromatin are hypomethylated
relative to the genome average [Bernstein et al. (2000)].
Speculate on the significance of these...
Which of the following statements about chromatin remodeling is incorrect? Select one: O a. Chromatin remodeling...
Which of the following statements about chromatin remodeling is incorrect? Select one: O a. Chromatin remodeling provides the transcription machinery with dynamic access to an otherwise tightly packaged genome. O b. Chromatin remodeling often involves histone modifications (e.g., methylation). O c. Eukaryotes use chromatin remodeling as a mechanism for epigenetic modifications. O d. Prokaryotes use chromatin remodeling to regulate operon activity. O e. Chromatin remodeling plays a central role in the regulation of gene expression.
thank you!! Question 1 0.5 pts It has been shown that inhibition of a key chromatin...
thank you!!
Question 1 0.5 pts It has been shown that inhibition of a key chromatin remodeling complex known as NURD. by deleting one of its subunits, can result in a significant increase in the efficiency of reprogramming of somatic cells into pluripotent stem cells. The reprogramming is normally done by the induced expression of a battery of transcription factors in the somatic cells, but is typically not very efficient. Such an observation suggests that the NURD complex is normally...
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...
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...
1. DNA is coiled around what type of proteins to form nucleosomes A. Polymerases DNA replication of the lagging strand is discontinuous B. Transcription factors DNA replication of the lagging strand is continuous C. Helicases D. Histones E. DICER 2. Which of the following statements is true? A. DNA replication of the leading strand is discontinuous B. DNA replication of the lagging strand is discontinuous C. DNA replication of the leading strand is dispersive D. DNA replication of the lagging...
While much remains to be learned about the role of nucleosomes
and chromatin structure and function, recent research indicates
that in vivo chemical modification of histones is
associated with changes in gene activity. One study determined that
acetylation of H3 and H4 is associated with 21.1 percent and 13.8
percent increases in yeast gene activity, respectively, and that
histones associated with yeast heterochromatin are hypomethylated
relative to the genome average [Bernstein et al. (2000)].
Speculate on the significance of these...
Which of the following statements about chromatin remodeling is incorrect? Select one: O a. Chromatin remodeling provides the transcription machinery with dynamic access to an otherwise tightly packaged genome. O b. Chromatin remodeling often involves histone modifications (e.g., methylation). O c. Eukaryotes use chromatin remodeling as a mechanism for epigenetic modifications. O d. Prokaryotes use chromatin remodeling to regulate operon activity. O e. Chromatin remodeling plays a central role in the regulation of gene expression.
thank you!!
Question 1 0.5 pts It has been shown that inhibition of a key chromatin remodeling complex known as NURD. by deleting one of its subunits, can result in a significant increase in the efficiency of reprogramming of somatic cells into pluripotent stem cells. The reprogramming is normally done by the induced expression of a battery of transcription factors in the somatic cells, but is typically not very efficient. Such an observation suggests that the NURD complex is normally...
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