Question 1

X-inactivation ــــــــــــــــــــــــ.

Accepted Answer

A) only occurs in males 
B) is the deactivation of both X chromosomes in all females 
C) shuts down one of the two X chromosomes in females 
D) occurs by the action of histone acetylation 
A) only occurs in males 
B) is the deactivation of both X chromosomes in all females 
C) shuts down one of the two X chromosomes in females 
D) occurs by the action of histone acetylation C

Question 2

Which of the following is commonly used as a control point in eukaryotic transcription?

Accepted Answer

A) initiation 
B) elongation 
C) termination 
D) RNA processing 
A) initiation 
B) elongation 
C) termination 
D) RNA processing A

Question 3

Specific transcription factorsــــــــــــــــــــــ .

Accepted Answer

A) modulate gene expression in response to a specific stimulus 
B) are not able to enter the nucleus of eukaryotes and instead help regulate gene expression at the post-transcriptional level 
C) bind to target mRNAs prior to translation 
D) prevent RNA polymerase II from binding to the DNA 
A) modulate gene expression in response to a specific stimulus 
B) are not able to enter the nucleus of eukaryotes and instead help regulate gene expression at the post-transcriptional level 
C) bind to target mRNAs prior to translation 
D) prevent RNA polymerase II from binding to the DNA A

Question 4

Simple repressors are common in eukaryotes.

Accepted Answer

A) True 
 B)False

Question 5

Xist isــــــــــــــــــــــــــ .

Accepted Answer

A) a gene encoding an untranslated RNA involved in X-inactivation 
B) the heterochromatin of inactivated X chromosomes 
C) is a gene that is only found on active X chromosomes 
D) helps inactivate the X chromosome of males 
A) a gene encoding an untranslated RNA involved in X-inactivation 
B) the heterochromatin of inactivated X chromosomes 
C) is a gene that is only found on active X chromosomes 
D) helps inactivate the X chromosome of males

Question 6

Housekeeping genes are always ــــــــــــــــــــــ.

Accepted Answer

A) off until needed 
B) on 
C) induced 
D) repressed 
A) off until needed 
B) on 
C) induced 
D) repressed

Question 7

Euchromatinـــــــــــــــــــــ .

Accepted Answer

A) is only found in prokaryotes 
B) does not allow gene expression to occur 
C) is densely packed chromatin 
D) is loosely packed chromatin 
A) is only found in prokaryotes 
B) does not allow gene expression to occur 
C) is densely packed chromatin 
D) is loosely packed chromatin

Question 8

Acetylated histonesــــــــــــــــــــــــ .

Accepted Answer

A) form highly condensed heterochromatin 
B) are a target of proteases 
C) never occurs 
D) allow nucleosomes to be less aggregated 
A) form highly condensed heterochromatin 
B) are a target of proteases 
C) never occurs 
D) allow nucleosomes to be less aggregated

Question 9

DNA sequences in eukaryotes that are rich in guanine and cytosine are calledــــــــــــــــ and are usually targets ofـــــــــــ .

Accepted Answer

A) inteins;acetylation 
B) GC islands;methylation 
C) promoters;transcriptional regulation 
D) enhancers;mediator binding 
A) inteins;acetylation 
B) GC islands;methylation 
C) promoters;transcriptional regulation 
D) enhancers;mediator binding

Question 10

In eukaryotes,negative regulation occurs by ـــــــــــــــــــــــــــــ.

Accepted Answer

A) obstructing RNA polymerase II 
B) interfering with activators 
C) interfering with repressors 
D) binding of repressors to operators 
A) obstructing RNA polymerase II 
B) interfering with activators 
C) interfering with repressors 
D) binding of repressors to operators

X-inactivation ــــــــــــــــــــــــ.

Which of the following is commonly used as a control point in eukaryotic transcription?

Specific transcription factorsــــــــــــــــــــــ .

Simple repressors are common in eukaryotes.

Xist isــــــــــــــــــــــــــ .

Housekeeping genes are always ــــــــــــــــــــــ.

Euchromatinـــــــــــــــــــــ .

Acetylated histonesــــــــــــــــــــــــ .

DNA sequences in eukaryotes that are rich in guanine and cytosine are calledــــــــــــــــ and are usually targets ofـــــــــــ .

In eukaryotes,negative regulation occurs by ـــــــــــــــــــــــــــــ.

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 Prokaryotes

Regulation at the RNA Level

Analysis of Gene Expression

Plasmids

Viruses

Mobile DNA

Mutations and Repair

Recombination

Bacterial Genetics

Molecular Evolution

Filters

Exam 17: Regulation of Transcription in Eukaryotes

X-inactivation ــــــــــــــــــــــــ.

Which of the following is commonly used as a control point in eukaryotic transcription?

Specific transcription factorsــــــــــــــــــــــ .

Simple repressors are common in eukaryotes.

Xist isــــــــــــــــــــــــــ .

Housekeeping genes are always ــــــــــــــــــــــ.

Euchromatinـــــــــــــــــــــ .

Acetylated histonesــــــــــــــــــــــــ .

DNA sequences in eukaryotes that are rich in guanine and cytosine are calledــــــــــــــــ and are usually targets ofـــــــــــ .

In eukaryotes,negative regulation occurs by ـــــــــــــــــــــــــــــ.

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 Prokaryotes

Regulation at the RNA Level

Analysis of Gene Expression

Plasmids

Viruses

Mobile DNA

Mutations and Repair

Recombination

Bacterial Genetics

Molecular Evolution

Filters