Question 1

In gene regulation,negative control is exerted by a(n)

Accepted Answer

A)  activator.
B)  operon.
C)  promoter.
D)  regulator.
E)  repressor.F) A) and B)
G) A) and C)

Question 2

The main form of glucose repression of the lac operon is

Accepted Answer

A)  induction.
B)  repression.
C)  inducer exclusion.
D)  the CAP/cAMP system.E) C) and D)
F) None of the above

Question 3

Proteins that bind to regulatory sequences have shapes that fit into the

Accepted Answer

A)  promoter.
B)  operator.
C)  operon.
D)  minor groove of DNA.
E)  major groove of DNA.F) A) and B)
G) A) and E)

Question 4

Which of the following is the hallmark of multicellular organisms?

Accepted Answer

A)  grow and divide rapidly
B)  cells adjust quickly to outside environment
C)  homeostasis
D)  quickly synthesize amount and type of enzymes according to available nutrients
E)  respond by gene action to oxygen availabilityF) A) and C)
G) None of the above

Question 5

Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix.This is accomplished by

Accepted Answer

A)  inserting DNA promoters into either the major groove or the minor groove of the double helix where the edges of the nitrogen bases protrude.
B)  inserting DNA-binding motifs into the minor groove of the double helix where the edges of the nitrogen bases protrude.
C)  inserting DNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude.
D)  inserting RNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude.
E)  inserting DNA-binding motifs into the major groove of the double helix where the edges of the nitrogen bases protrudE.F) C) and D)
G) A) and B)

Question 6

Certain proteins can bind to specific DNA regulatory sequences by

Accepted Answer

A)  entering the major groove of the DNA and reading the nucleotide base pairs.
B)  entering the minor groove of the DNA and reading the nucleotide base pairs.
C)  entering the major groove of RNA and reading the nucleotide base pairs.
D)  entering DNA's major groove by using DNA polymerase and reading the nucleotide base pairs.
E)  entering DNA's minor groove by using DNA polymerase and reading the nucleotide base pairs.F) B) and E)
G) C) and E)

Question 7

In __________ organisms,the primary function of a gene in a cell is to participate in regulating the body as a whole and not to responding to the cell's immediate environment.

Accepted Answer

A)  multicellular
B)  diploid
C)  bacterial
D)  prokaryoticE) A) and B)
F) A) and C)

Question 8

Which of the following statements regarding primary transcripts in eukaryotes is correct?

Accepted Answer

A)  The primary transcript is composed of RNA polymerase and associated histones.
B)  The primary transcript has the exons removed and the introns retained for translation.
C)  The primary transcript is a faithful copy of the entire gene including exons and introns.
D)  The primary transcript is a faithful copy of the gene,but the introns have been removeD.
E)  The primary transcript is a faithful copy,but the exons have been removed.F) A) and B)
G) All of the above

Question 9

Transcriptional control-proteins increase the rate of transcription by binding to

Accepted Answer

A)  mRNA sequences within the DNA.
B)  tRNA sequences within the DNA.
C)  operator sequences within the DNA.
D)  promotor sequences within the DNA.
E)  enhancer sequences within the DNA.F) C) and D)
G) A) and B)

Question 10

In eukaryotes,the binding of TFIID is followed by the binding of a number of other general transcription factors.Which of the following lists the correct order of binding of these factors?

Accepted Answer

A)  TFIIA,TFIIB,TFIIE,TFIIF,TFIIH
B)  TFIIE,TFIIF,TFIIA,TFIIB,TFIIH
C)  TFIIF,TFIIH,TFIIB,TFIIE,TFIIA
D)  TFIIE,TFIIB,TFIIA,TFIIH,TFIIFE) None of the above
F) All of the above

Question 11

Your research project involves the characterization of a recently identified transcription factor.As part of your project,you want to determine if this transcription factor binds directly to any of the general transcription factors.Unfortunately,however,you are having trouble expressing and purifying the full length protein.Which of the following options may help you achieve your research goal?

Accepted Answer

A)  Since transcription domains cannot be separated,you will need to abandon this experiment and try a vastly different approach to your question.
B)  Express large amounts of the general transcription factors.
C)  Since transcription domains can be separated,try to express and purify only the DNA-binding domain.
D)  Since transcription domains can be separated,try to express and purify only the activation domain.E) C) and D)
F) A) and D)

Question 12

Enhancers are the binding sites for the

Accepted Answer

A)  promotors of DNA synthesis.
B)  suppressor factors.
C)  co-activation factors.
D)  mediator factors.
E)  specific transcription factors.F) None of the above
G) B) and D)

Question 13

All regulatory proteins have common DNA binding motifs,which are particular bends in their protein chains that permit them to interlock with the

Accepted Answer

A)  minor groove of the DNA helix.
B)  major groove of the DNA helix.
C)  outside groove of the DNA helix.
D)  inside groove of the DNA helix.
E)  hydrogen bonding groove of the DNA helix.F) A) and E)
G) A) and C)

Question 14

Which of the following is not true about control of gene expression?

Accepted Answer

A)  In bacteria it allows them to adopt to changing environments.
B)  In multicellular organisms it is critical for development.
C)  In bacteria it allows them to replicate without control.
D)  In multicellular organisms it allows them to maintain homeostasis.
E)  In multicellular organisms it allows them to function as a wholE.F) A) and C)
G) D) and E)

Question 15

Although the specific mechanism of RNA interference has not been fully defined,it involves

Accepted Answer

A)  double stranded RNA interference with mRNA.
B)  double stranded RNA interference with DNA.
C)  double stranded DNA interference with mRNA.
D)  double stranded mRNA interference with DNA.E) B) and C)
F) A) and D)

Question 16

A protein that initiates the transcription of genes which allow the use of non-glucose molecules.

Accepted Answer

A)  operon
B)  repressor
C)  promoter
D)  operator
E)  CAPF) A) and D)
G) A) and E)

Question 17

The TFIID complex is formed by

Accepted Answer

A)  TATA-binding protein TBP and TAFs.
B)  TATA-binding protein TBP,TAFs and RNA pol II.
C)  TAFs and the core promoter.
D)  TATA-binding protein and activators.E) B) and D)
F) None of the above

Question 18

The maintenance of a constant environment in a cell is called ___________.

Accepted Answer

A)  active transport
B)  homeostasis
C)  gene expression
D)  translationE) A) and B)
F) B) and C)

Question 19

Elucidation of the histone code might

Accepted Answer

A)  allow us to turn specific genes on or off.
B)  allow the determination of nucleosome composition.
C)  lead to chromatin remodeling.
D)  allow us to control translation.E) None of the above
F) A) and B)

Question 20

If you were able to look very closely at a portion of DNA and find methylated histones,you would

Accepted Answer

A)  be mistaken since only DNA can be methylated,not histones.
B)  be looking at a region of active chromatin.
C)  be looking at a region of inactive chromatin.
D)  be looking at a chromatin remodeling complex.E) B) and C)
F) B) and D)

Exam 16: Control of Gene Expression

Which of the following is not true about control of gene expression?

Correct Answer
verified

Transcriptional control-proteins increase the rate of transcription by binding to

Correct Answer
verified

Correct Answer
verified

In __________ organisms,the primary function of a gene in a cell is to participate in regulating the body as a whole and not to responding to the cell's immediate environment.

Correct Answer
verified

In eukaryotes,the binding of TFIID is followed by the binding of a number of other general transcription factors.Which of the following lists the correct order of binding of these factors?

Correct Answer
verified

All regulatory proteins have common DNA binding motifs,which are particular bends in their protein chains that permit them to interlock with the

Correct Answer
verified

The TFIID complex is formed by

Correct Answer
verified

Certain proteins can bind to specific DNA regulatory sequences by

Correct Answer
verified

A protein that initiates the transcription of genes which allow the use of non-glucose molecules.

Correct Answer
verified

Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix.This is accomplished by

Correct Answer
verified

Which of the following is the hallmark of multicellular organisms?

Correct Answer
verified

Enhancers are the binding sites for the

Correct Answer
verified

If you were able to look very closely at a portion of DNA and find methylated histones,you would

Correct Answer
verified

Proteins that bind to regulatory sequences have shapes that fit into the

Correct Answer
verified

Elucidation of the histone code might

Correct Answer
verified

Which of the following statements regarding primary transcripts in eukaryotes is correct?

Correct Answer
verified

The maintenance of a constant environment in a cell is called ___________.

Correct Answer
verified

Although the specific mechanism of RNA interference has not been fully defined,it involves

Correct Answer
verified

The main form of glucose repression of the lac operon is

Correct Answer
verified

In gene regulation,negative control is exerted by a(n)

Correct Answer
verified

Exam 16: Control of Gene Expression

Which of the following is not true about control of gene expression?

Correct AnswerverifiedShow Answer

Transcriptional control-proteins increase the rate of transcription by binding to

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In __________ organisms,the primary function of a gene in a cell is to participate in regulating the body as a whole and not to responding to the cell's immediate environment.

Correct AnswerverifiedShow Answer

In eukaryotes,the binding of TFIID is followed by the binding of a number of other general transcription factors.Which of the following lists the correct order of binding of these factors?

Correct AnswerverifiedShow Answer

All regulatory proteins have common DNA binding motifs,which are particular bends in their protein chains that permit them to interlock with the

Correct AnswerverifiedShow Answer

The TFIID complex is formed by

Correct AnswerverifiedShow Answer

Certain proteins can bind to specific DNA regulatory sequences by

Correct AnswerverifiedShow Answer

A protein that initiates the transcription of genes which allow the use of non-glucose molecules.

Correct AnswerverifiedShow Answer

Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix.This is accomplished by

Correct AnswerverifiedShow Answer

Which of the following is the hallmark of multicellular organisms?

Correct AnswerverifiedShow Answer

Enhancers are the binding sites for the

Correct AnswerverifiedShow Answer

If you were able to look very closely at a portion of DNA and find methylated histones,you would

Correct AnswerverifiedShow Answer

Proteins that bind to regulatory sequences have shapes that fit into the

Correct AnswerverifiedShow Answer

Elucidation of the histone code might

Correct AnswerverifiedShow Answer

Which of the following statements regarding primary transcripts in eukaryotes is correct?

Correct AnswerverifiedShow Answer

The maintenance of a constant environment in a cell is called ___________.

Correct AnswerverifiedShow Answer

Although the specific mechanism of RNA interference has not been fully defined,it involves

Correct AnswerverifiedShow Answer

The main form of glucose repression of the lac operon is

Correct AnswerverifiedShow Answer

In gene regulation,negative control is exerted by a(n)

Correct AnswerverifiedShow Answer

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