Question 1

Which of the following is not true?

Accepted Answer

A)  The mechanism of activation of eukaryotic genes involves addition and removal of phosphate residues from some of the transcription factors. 
B)  In plants, there are 5 RNA polymerases. 
C)  RNA Pol IV is the primary RNA synthesizer in plants 
D)  Of the RNA Polymerases in eukaryotes, Pol II is the most extensively studied. 
A)  The mechanism of activation of eukaryotic genes involves addition and removal of phosphate residues from some of the transcription factors. 
B)  In plants, there are 5 RNA polymerases. 
C)  RNA Pol IV is the primary RNA synthesizer in plants 
D)  Of the RNA Polymerases in eukaryotes, Pol II is the most extensively studied.

Question 2

The enzyme principally responsible for RNA synthesis in Escherichia coli

Accepted Answer

A)  is a multisubunit enzyme 
B)  consists of a single polypeptide chain 
C)  requires Mn2+ for activity 
D)  requires a DNA primer 
A)  is a multisubunit enzyme 
B)  consists of a single polypeptide chain 
C)  requires Mn2+ for activity 
D)  requires a DNA primer

Question 3

The major difference between RNA initiation in eukaryotes and prokaryotes is the number of factors involved in the process.

Accepted Answer

A) True 
 B)False

Question 4

How do enhancers differ from promoters?

Accepted Answer

A)  Enhancers do not bind RNA polymerase. 
B)  Enhancers include the UP element. 
C)  Enhancers bind the sigma (s) factor. 
D)  There is no difference; these terms are synonymous. 
A)  Enhancers do not bind RNA polymerase. 
B)  Enhancers include the UP element. 
C)  Enhancers bind the sigma (s) factor. 
D)  There is no difference; these terms are synonymous.

Question 5

Which of following statements describes a difference between replication of DNA and transcription of RNA?

Accepted Answer

A)  Nucleoside triphosphates are the precursors for replication, but nucleoside diphosphates are used for transcription. 
B)  Both strands of DNA are copied in replication, but usually only one is copied in transcription. 
C)  Base pairing is used to copy the sequence in replication, but not in transcription. 
D)  The chain grows from the 5' to the 3' end in replication, but 3' to 5' in transcription. 
A)  Nucleoside triphosphates are the precursors for replication, but nucleoside diphosphates are used for transcription. 
B)  Both strands of DNA are copied in replication, but usually only one is copied in transcription. 
C)  Base pairing is used to copy the sequence in replication, but not in transcription. 
D)  The chain grows from the 5' to the 3' end in replication, but 3' to 5' in transcription.

Question 6

How do the core enzyme and the holoenzyme of RNA polymerase differ in

Accepted Answer

A)  The holoenzyme includes the sigma (s) subunit, the core enzyme does not. 
B)  The core enzyme includes the sigma (s) subunit, the holoenzyme does not. 
C)  The holoenzyme transcribes from an RNA template, the core enzyme from a DNA template. 
D)  The core enzyme transcribes from an RNA template, the holoenzyme from a DNA template. 
E)  coli? 
A)  The holoenzyme includes the sigma (s) subunit, the core enzyme does not. 
B)  The core enzyme includes the sigma (s) subunit, the holoenzyme does not. 
C)  The holoenzyme transcribes from an RNA template, the core enzyme from a DNA template. 
D)  The core enzyme transcribes from an RNA template, the holoenzyme from a DNA template. 
E)  coli?

Question 7

Which of the following is true about riboswitches:

Accepted Answer

A)  They have a molecule sensing domain called an aptamer 
B)  There are known pathogens that use riboswitches as part of their mechanism 
C)  They respond to specific molecules and control translation in a way that is often similar to transcription attenuation 
D)  They contain a sensing domain and a decision making domain 
E)  All of these 
A)  They have a molecule sensing domain called an aptamer 
B)  There are known pathogens that use riboswitches as part of their mechanism 
C)  They respond to specific molecules and control translation in a way that is often similar to transcription attenuation 
D)  They contain a sensing domain and a decision making domain 
E)  All of these

Question 8

Which of the following RNAs is noted for having a "cloverleaf" structure?

Accepted Answer

A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  All of these 
A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  All of these

Question 9

Which of the following is not a structural motif encountered in DNA-binding proteins?

Accepted Answer

A)  helix-turn-helix 
B)  leucine zipper 
C)  zinc finger 
D)  b-barrel 
A)  helix-turn-helix 
B)  leucine zipper 
C)  zinc finger 
D)  b-barrel

Question 10

Which of the following is not part of the core promoter?

Accepted Answer

A)  the transcription start site 
B)  the Pribnow box (-10 region) 
C)  the -35 region 
D)  the UP element 
A)  the transcription start site 
B)  the Pribnow box (-10 region) 
C)  the -35 region 
D)  the UP element

Question 11

Which of the following is not a property of the sigma (s) subunit?

Accepted Answer

A)  It tells the RNA Polymerase where to sit down. 
B)  It helps point the RNA Pol in the proper direction. 
C)  It causes the RNA Pol to bind tightly to the DNA. 
D)  It stays with the RNA Pol throughout synthesis. 
A)  It tells the RNA Polymerase where to sit down. 
B)  It helps point the RNA Pol in the proper direction. 
C)  It causes the RNA Pol to bind tightly to the DNA. 
D)  It stays with the RNA Pol throughout synthesis.

Question 12

Which of the following offers the best description of a Pribnow box?

Accepted Answer

A)  A promoter consensus sequence located at approximately -35. 
B)  A promoter consensus sequence located at approximately -10. 
C)  A sequence forming a hairpin loop signaling the termination of transcription. 
D)  A sequence immediately surrounding the start site of transcription. 
A)  A promoter consensus sequence located at approximately -35. 
B)  A promoter consensus sequence located at approximately -10. 
C)  A sequence forming a hairpin loop signaling the termination of transcription. 
D)  A sequence immediately surrounding the start site of transcription.

Question 13

The elongation and termination phases of eukaryotic transcription

Accepted Answer

A)  require several protein factors 
B)  are better understood than the initiation phase 
C)  are not subject to control mechanisms, only the initiation phase 
D)  proceed at a constant rate and always stop at the same termination sequence 
A)  require several protein factors 
B)  are better understood than the initiation phase 
C)  are not subject to control mechanisms, only the initiation phase 
D)  proceed at a constant rate and always stop at the same termination sequence

Which of the following is not true?

The enzyme principally responsible for RNA synthesis in Escherichia coli

The major difference between RNA initiation in eukaryotes and prokaryotes is the number of factors involved in the process.

How do enhancers differ from promoters?

Which of following statements describes a difference between replication of DNA and transcription of RNA?

How do the core enzyme and the holoenzyme of RNA polymerase differ in

Which of the following is true about riboswitches:

Which of the following RNAs is noted for having a "cloverleaf" structure?

Which of the following is not a structural motif encountered in DNA-binding proteins?

Which of the following is not part of the core promoter?

Which of the following is not a property of the sigma (s) subunit?

Which of the following offers the best description of a Pribnow box?

The elongation and termination phases of eukaryotic transcription

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

Exam 11: Transcription of the Genetic Code: Biosynthesis of Rna

Which of the following is not true?

The enzyme principally responsible for RNA synthesis in Escherichia coli

The major difference between RNA initiation in eukaryotes and prokaryotes is the number of factors involved in the process.

How do enhancers differ from promoters?

Which of following statements describes a difference between replication of DNA and transcription of RNA?

How do the core enzyme and the holoenzyme of RNA polymerase differ in

Which of the following is true about riboswitches:

Which of the following RNAs is noted for having a "cloverleaf" structure?

Which of the following is not a structural motif encountered in DNA-binding proteins?

Which of the following is not part of the core promoter?

Which of the following is not a property of the sigma (s) subunit?

Which of the following offers the best description of a Pribnow box?

The elongation and termination phases of eukaryotic transcription

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters