Question 1

Select the correct statement about enhancers

Accepted Answer

A) They are proteins that promote transcription of RNA. 
B) They stimulate the binding of repressor to DNA. 
C) They bind protein factors and stimulate transcription. 
D) They are nonpromoter protein elements. 
E) None of the choices is correct. 
A) They are proteins that promote transcription of RNA. 
B) They stimulate the binding of repressor to DNA. 
C) They bind protein factors and stimulate transcription. 
D) They are nonpromoter protein elements. 
E) None of the choices is correct.

Question 2

The tryptophan repressor is composed of tryptophan and an aporepressor.

Accepted Answer

A) True 
 B)False

Question 3

The procedure of making heavy-atom derivative crystals of protein is called multiple isomorphous replacement (MIR).

Accepted Answer

A) True 
 B)False

Question 4

Looking at the binding of proteins to DNA in terms of entropy,it appears that

Accepted Answer

A) the level of entropy decreases in monomeric proteins promoting binding to DNA. 
B) the DNA-protein complex is more ordered than the DNA or protein alone. 
C) binding of two protein subunits,independently of each other,causes an increase in entropy. 
D) the level of entropy decreases in monomeric proteins promoting binding to DNA and the DNA-protein complex is more ordered than the DNA or protein alone are correct. 
E) the DNA-protein complex is more ordered than the DNA or protein alone and binding of two protein subunits,independently of each other,causes an increase in entropy are correct. 
A) the level of entropy decreases in monomeric proteins promoting binding to DNA. 
B) the DNA-protein complex is more ordered than the DNA or protein alone. 
C) binding of two protein subunits,independently of each other,causes an increase in entropy. 
D) the level of entropy decreases in monomeric proteins promoting binding to DNA and the DNA-protein complex is more ordered than the DNA or protein alone are correct. 
E) the DNA-protein complex is more ordered than the DNA or protein alone and binding of two protein subunits,independently of each other,causes an increase in entropy are correct.

Question 5

Compared to binding of monomeric proteins to DNA,which of the following is true regarding the binding of a dimeric protein?

Accepted Answer

A) requires twice the energy 
B) entropy increases 
C) requires less energy 
D) disorder increases 
E) none of the choices are correct. 
A) requires twice the energy 
B) entropy increases 
C) requires less energy 
D) disorder increases 
E) none of the choices are correct.

Question 6

All of the following contain helix-turn-helix motifs except

Accepted Answer

A) $\lambda$ repressor. 
B) tryptophan. 
C) Cro. 
D) CAP. 
E) All of the choices are correct. 
A) $\lambda$ repressor. 
B) tryptophan. 
C) Cro. 
D) CAP. 
E) All of the choices are correct.

Question 7

The array of spots in a diffraction pattern cannot be used to construct an electron density map because

Accepted Answer

A) the phase angles are not included in a diffraction pattern. 
B) the protein is coated with heavy atoms. 
C) heavy atoms bind to reactive amino acids. 
D) the proteins are coated with mercury. 
E) none of the choices are correct. 
A) the phase angles are not included in a diffraction pattern. 
B) the protein is coated with heavy atoms. 
C) heavy atoms bind to reactive amino acids. 
D) the proteins are coated with mercury. 
E) none of the choices are correct.

Select the correct statement about enhancers

The tryptophan repressor is composed of tryptophan and an aporepressor.

The procedure of making heavy-atom derivative crystals of protein is called multiple isomorphous replacement (MIR).

Looking at the binding of proteins to DNA in terms of entropy,it appears that

Compared to binding of monomeric proteins to DNA,which of the following is true regarding the binding of a dimeric protein?

All of the following contain helix-turn-helix motifs except

The array of spots in a diffraction pattern cannot be used to construct an electron density map because

A Brief History

The Molecular Nature of Genes

An Introduction to Gene Function

Molecular Cloning Methods

Molecular Tools for Studying Genes and Gene Activity

The Mechanism of Transcription in Bacteria

Operons: Fine Control of Bacterial Transcription

Major Shifts in Bacterial Transcription

Eukaryotic Rna Polymerases and Their Promoters

General Transcription Factors in Eukaryotes

Transcription Activators in Eukaryotes

Chromatin Structure and Its Effect on Transcription

Rna Processing I: Splicing

Rna Processing II: Capping and Polyadenylation

Rna Processing: Other Post-Transcriptional Events

The Mechanism of Translation I: Initiation

The Mechanism of Translation II: Elongation and Termination

Ribosomes and Transfer Rna

Dna Replication,damage and Repair

Dna Replication II: Detailed Mechanism

Homologous Recombination

Transposition

Introduction to Genomics: Dna Sequencing on a Genomic Scale

Genomics II: Functional Genomics,proteomics and Bioinformatics

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Exam 9: Dna-Protein Interactions in Bacteria

Select the correct statement about enhancers

The tryptophan repressor is composed of tryptophan and an aporepressor.

The procedure of making heavy-atom derivative crystals of protein is called multiple isomorphous replacement (MIR).

Looking at the binding of proteins to DNA in terms of entropy,it appears that

Compared to binding of monomeric proteins to DNA,which of the following is true regarding the binding of a dimeric protein?

All of the following contain helix-turn-helix motifs except

The array of spots in a diffraction pattern cannot be used to construct an electron density map because

A Brief History

The Molecular Nature of Genes

An Introduction to Gene Function

Molecular Cloning Methods

Molecular Tools for Studying Genes and Gene Activity

The Mechanism of Transcription in Bacteria

Operons: Fine Control of Bacterial Transcription

Major Shifts in Bacterial Transcription

Eukaryotic Rna Polymerases and Their Promoters

General Transcription Factors in Eukaryotes

Transcription Activators in Eukaryotes

Chromatin Structure and Its Effect on Transcription

Rna Processing I: Splicing

Rna Processing II: Capping and Polyadenylation

Rna Processing: Other Post-Transcriptional Events

The Mechanism of Translation I: Initiation

The Mechanism of Translation II: Elongation and Termination

Ribosomes and Transfer Rna

Dna Replication,damage and Repair

Dna Replication II: Detailed Mechanism

Homologous Recombination

Transposition

Introduction to Genomics: Dna Sequencing on a Genomic Scale

Genomics II: Functional Genomics,proteomics and Bioinformatics

Filters