Question 1

Some nucleotides are involved in transcriptional regulation.

Accepted Answer

A) True 
 B)False  True

Question 2

Autoregulation occurs when ــــــــــــــــــــ.

Accepted Answer

A) IPTG binds to LacI 
B) allo-lactose binds to LacI 
C) a repressor binds to its own gene to prevent transcription 
D) CRP binds to cAMP and the the lac operon 
A) IPTG binds to LacI 
B) allo-lactose binds to LacI 
C) a repressor binds to its own gene to prevent transcription 
D) CRP binds to cAMP and the the lac operon C

Question 3

All of the following are examples of transcriptional regulation in prokaryotes exceptــــــــــــــــــــــ .

Accepted Answer

A) binding of a repressor to an operator 
B) premature termination of RNA polymerase during transcription elongation 
C) binding of cAMP-CRP complex to the lac operon of Escherichia coli 
D) over-riding termination by anti-terminator proteins 
A) binding of a repressor to an operator 
B) premature termination of RNA polymerase during transcription elongation 
C) binding of cAMP-CRP complex to the lac operon of Escherichia coli 
D) over-riding termination by anti-terminator proteins B

Question 4

All of the following are associated with two-component regulatory systems exceptـــــــــــــــــــــــــ .

Accepted Answer

A) gratuitous inducer 
B) phosphorelay 
C) DNA binding regulator 
D) sensor kinase 
A) gratuitous inducer 
B) phosphorelay 
C) DNA binding regulator 
D) sensor kinase

Question 5

Global regulatorsــــــــــــــــــــــــــ .

Accepted Answer

A) control large numbers of genes in response to a broad,general signals 
B) control large numbers of genes in response to a specific signal 
C) control small numbers of genes in response to broad,general signals 
D) control small numbers of genes in response to a specific signal 
A) control large numbers of genes in response to a broad,general signals 
B) control large numbers of genes in response to a specific signal 
C) control small numbers of genes in response to broad,general signals 
D) control small numbers of genes in response to a specific signal

Question 6

Transcriptional elements that bind to a DNA molecule where the gene they regulate is located areــــــــــــــ .

Accepted Answer

A) trans-acting elements 
B) cis-acting elements 
C) positive regulators 
D) negative regulators 
A) trans-acting elements 
B) cis-acting elements 
C) positive regulators 
D) negative regulators

Question 7

Gratuitous inducers ــــــــــــــــــــــــ.

Accepted Answer

A) are metabolized like the natural inducer 
B) are not broken down 
C) are nutrient sources 
D) are competitive inhibitors 
A) are metabolized like the natural inducer 
B) are not broken down 
C) are nutrient sources 
D) are competitive inhibitors

Question 8

Alternative sigma factors exist for all of the following exceptــــــــــــــــــــــ .

Accepted Answer

A) heat shock 
B) nitrogen control 
C) flagellar motion 
D) exponential phase 
A) heat shock 
B) nitrogen control 
C) flagellar motion 
D) exponential phase

Question 9

Which of the following is not an inducer of the lac operon?

Accepted Answer

A) allo-lactose 
B) IPTG 
C) glucose 
D) lactose 
A) allo-lactose 
B) IPTG 
C) glucose 
D) lactose

Question 10

Which of the following is an example of negative regulation?

Accepted Answer

A) A gene is switched on in the presence of an activator. 
B) A gene is de-repressed. 
C) A gene is induced. 
D) A gene is switched off by a repressor protein. 
A) A gene is switched on in the presence of an activator. 
B) A gene is de-repressed. 
C) A gene is induced. 
D) A gene is switched off by a repressor protein.

Some nucleotides are involved in transcriptional regulation.

Autoregulation occurs when ــــــــــــــــــــ.

All of the following are examples of transcriptional regulation in prokaryotes exceptــــــــــــــــــــــ .

All of the following are associated with two-component regulatory systems exceptـــــــــــــــــــــــــ .

Global regulatorsــــــــــــــــــــــــــ .

Transcriptional elements that bind to a DNA molecule where the gene they regulate is located areــــــــــــــ .

Gratuitous inducers ــــــــــــــــــــــــ.

Alternative sigma factors exist for all of the following exceptــــــــــــــــــــــ .

Which of the following is not an inducer of the lac operon?

Which of the following is an example of negative regulation?

Cells and Organisms

Basic Genetics

DNA, RNA, and Protein

Genes, genomes, and DNA

Manipulation of Nucleic Acids

Polymerase Chain Reaction

Recombinant DNA Technology

DNA Sequencing

Genomics Systems Biology

Cell Division and DNA Replication

Transcription of Genes

Processing of RNA

Protein Synthesis

Protein Structure and Function

Proteomics

Regulation of Transcription in Eukaryotes

Regulation at the RNA Level

Analysis of Gene Expression

Plasmids

Viruses

Mobile DNA

Mutations and Repair

Recombination

Bacterial Genetics

Molecular Evolution

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Exam 16: Regulation of Transcription in Prokaryotes

Some nucleotides are involved in transcriptional regulation.

Autoregulation occurs when ــــــــــــــــــــ.

All of the following are examples of transcriptional regulation in prokaryotes exceptــــــــــــــــــــــ .

All of the following are associated with two-component regulatory systems exceptـــــــــــــــــــــــــ .

Global regulatorsــــــــــــــــــــــــــ .

Transcriptional elements that bind to a DNA molecule where the gene they regulate is located areــــــــــــــ .

Gratuitous inducers ــــــــــــــــــــــــ.

Alternative sigma factors exist for all of the following exceptــــــــــــــــــــــ .

Which of the following is not an inducer of the lac operon?

Which of the following is an example of negative regulation?

Cells and Organisms

Basic Genetics

DNA, RNA, and Protein

Genes, genomes, and DNA

Manipulation of Nucleic Acids

Polymerase Chain Reaction

Recombinant DNA Technology

DNA Sequencing

Genomics Systems Biology

Cell Division and DNA Replication

Transcription of Genes

Processing of RNA

Protein Synthesis

Protein Structure and Function

Proteomics

Regulation of Transcription in Eukaryotes

Regulation at the RNA Level

Analysis of Gene Expression

Plasmids

Viruses

Mobile DNA

Mutations and Repair

Recombination

Bacterial Genetics

Molecular Evolution

Filters