A student made the following table to summarize what he had learned about bacterial transcriptional control mechanisms. A fellow classmate pointed out that the table is not accurate. Which statement describes the problem? \[\begin{array} { | l | c | c | c | } \hline & \begin{array} { c } \text { Type of } \\ \text { regulatory } \\ \text { protein } \end{array} & \begin{array} { c } \text { Operon } \\ \text { transcriptional } \\ \text { response to wild- } \\ \text { type regulatory } \\ \text { protein } \end{array} & \begin{array} { c } \text { Operon transcriptional } \\ \text { response to mutated } \\ \text { regulatory protein } \\ \text { (rendered nonfunctional) } \end{array} \\ \hline \text { Positive control } & \text { Activator } & \text { On } & \text { Off } \\ \hline \text { Negative control } & \text { Repressor } & \text { Off } & \text { Off } \\ \hline \end{array}\]

A) The terms listed for the types of regulatory proteins for both positive and negative control systems are incorrect. B) The wild-type regulatory protein in positive control systems causes transcription of the operon to be turned off. C) The mutated nonfunctional regulatory protein in negative control systems causes transcription of the operon to be turned on. D) Both the mutated nonfunctional regulatory protein in positive and negative control systems cause transcription of the operon to be turned on. A) The terms listed for the types of regulatory proteins for both positive and negative control systems are incorrect. B) The wild-type regulatory protein in positive control systems causes transcription of the operon to be turned off. C) The mutated nonfunctional regulatory protein in negative control systems causes transcription of the operon to be turned on. D) Both the mutated nonfunctional regulatory protein in positive and negative control systems cause transcription of the operon to be turned on.

Exam 9: Transcriptional Regulation and Epigenetics

Explore all topics

Polycomb proteins are important in repressing gene transcription during development and differentiation. They act by _______ lysine residues in histones.

(Short Answer)

4.8/5

(70)

Question 101

Which statement about cis-acting elements is true?

(Multiple Choice)

4.9/5

(82)

Question 102

The diagram below illustrates how two _______-acting elements are positioned near the gene that they regulate.

(Short Answer)

5.0/5

(70)

Question 103

DNA methylation patterns in parental cells are established and maintained in progeny cells by which of the following mechanisms?

(Multiple Choice)

4.8/5

(82)

Question 104

Suppose a mutation renders a cell incapable of producing functional P-TEFb. What effect would the mutation have on this cell?

(Multiple Choice)

4.9/5

(92)

Question 105

The lac operator consists of approximately 20 base pairs of DNA located

(Multiple Choice)

4.9/5

(81)

Question 106

What is the role of the transcription factor c-Myc in human embryonic stem cells?

(Multiple Choice)

4.9/5

(84)

Question 107

How can epigenetic changes explain why identical twins develop different physical characteristics later in life?

(Multiple Choice)

4.9/5

(64)

Question 108

Which characteristic of chromatin would you expect to see increase when incubated with histone acetyltransferase enzymes?

(Multiple Choice)

4.7/5

(76)

Question 109

Some bacterial promoter regions are regulated by _ that stimulate RNA polymerase binding and by _ that block RNA polymerase binding.

(Multiple Choice)

4.8/5

(68)

Question 110

If you had genomic DNA and a purified transcription factor, how might you use that to determine the DNA sequence to which the transcription factor binds?

(Essay)

4.7/5

(79)

Question 111

The nucleus of a mature mouse skin cell is transplanted into an enucleated mouse embryo. The embryo develops into a blastocyst but then stalls at this stage. How can epigenetics explain this?

(Essay)

4.9/5

(86)

Question 112

A student made the following table to summarize what he had learned about bacterial transcriptional control mechanisms. A fellow classmate pointed out that the table is not accurate. Which statement describes the problem? Type of regulatory protein Operon transcriptional response to wild- type regulatory protein Operon transcriptional response to mutated regulatory protein (rendered nonfunctional) Positive control Activator On Off Negative control Repressor Off Off

(Multiple Choice)

4.8/5

(82)

Question 113

P-TEFb contains a _______ that phosphorylates NELF, DSIF, and serine 2 in the C-terminal domain of RNA polymerase, all of which lead to re-activation of RNA polymerase and transcriptional elongation.

(Short Answer)

4.9/5

(78)

Question 114

Eukaryotic gene repressor proteins are thought to act by binding to

(Multiple Choice)

4.8/5

(89)

Question 115

Showing 101 - 115 of 115

Polycomb proteins are important in repressing gene transcription during development and differentiation. They act by _______ lysine residues in histones.

Which statement about cis-acting elements is true?

The diagram below illustrates how two _______-acting elements are positioned near the gene that they regulate.

DNA methylation patterns in parental cells are established and maintained in progeny cells by which of the following mechanisms?

Suppose a mutation renders a cell incapable of producing functional P-TEFb. What effect would the mutation have on this cell?

The lac operator consists of approximately 20 base pairs of DNA located

What is the role of the transcription factor c-Myc in human embryonic stem cells?

How can epigenetic changes explain why identical twins develop different physical characteristics later in life?

Which characteristic of chromatin would you expect to see increase when incubated with histone acetyltransferase enzymes?

Some bacterial promoter regions are regulated by _ that stimulate RNA polymerase binding and by _ that block RNA polymerase binding.

If you had genomic DNA and a purified transcription factor, how might you use that to determine the DNA sequence to which the transcription factor binds?

The nucleus of a mature mouse skin cell is transplanted into an enucleated mouse embryo. The embryo develops into a blastocyst but then stalls at this stage. How can epigenetics explain this?

P-TEFb contains a _______ that phosphorylates NELF, DSIF, and serine 2 in the C-terminal domain of RNA polymerase, all of which lead to re-activation of RNA polymerase and transcriptional elongation.

Eukaryotic gene repressor proteins are thought to act by binding to

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

Exam 9: Transcriptional Regulation and Epigenetics

Polycomb proteins are important in repressing gene transcription during development and differentiation. They act by _______ lysine residues in histones.

Which statement about cis-acting elements is true?

The diagram below illustrates how two _______-acting elements are positioned near the gene that they regulate.

DNA methylation patterns in parental cells are established and maintained in progeny cells by which of the following mechanisms?

Suppose a mutation renders a cell incapable of producing functional P-TEFb. What effect would the mutation have on this cell?

The lac operator consists of approximately 20 base pairs of DNA located

What is the role of the transcription factor c-Myc in human embryonic stem cells?

How can epigenetic changes explain why identical twins develop different physical characteristics later in life?

Which characteristic of chromatin would you expect to see increase when incubated with histone acetyltransferase enzymes?

Some bacterial promoter regions are regulated by _______ that stimulate RNA polymerase binding and by _______ that block RNA polymerase binding.

If you had genomic DNA and a purified transcription factor, how might you use that to determine the DNA sequence to which the transcription factor binds?

The nucleus of a mature mouse skin cell is transplanted into an enucleated mouse embryo. The embryo develops into a blastocyst but then stalls at this stage. How can epigenetics explain this?

P-TEFb contains a _______ that phosphorylates NELF, DSIF, and serine 2 in the C-terminal domain of RNA polymerase, all of which lead to re-activation of RNA polymerase and transcriptional elongation.

Eukaryotic gene repressor proteins are thought to act by binding to

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

Some bacterial promoter regions are regulated by _ that stimulate RNA polymerase binding and by _ that block RNA polymerase binding.