Question 1

Which process listed below allows genetic material to be transferred from a virus-like particle that lacks genes for its own replication?

Accepted Answer

A)  conjugation of an F+ plasmid 
B)  gene transfer through a gene transfer agent 
C)  transduction by a dsDNA phage Mu 
D)  transformation of a linear piece of DNA 
A)  conjugation of an F+ plasmid 
B)  gene transfer through a gene transfer agent 
C)  transduction by a dsDNA phage Mu 
D)  transformation of a linear piece of DNA

Question 2

F⁺ strains of Escherichia coli

Accepted Answer

A)  do not have an F factor. 
B)  have the F factor as a plasmid. 
C)  have an integrated F factor. 
D)  transfer the F factor to recipient cells at a high frequency. 
A)  do not have an F factor. 
B)  have the F factor as a plasmid. 
C)  have an integrated F factor. 
D)  transfer the F factor to recipient cells at a high frequency.

Question 3

Toxigenicity in Corynebacterium diphtheriae is due to phage conversion.

Accepted Answer

A) True 
 B)False

Question 4

A ʺpoint mutationʺ refers to mutations involving

Accepted Answer

A)  a base-pair substitution. 
B)  the gain of a base pair (microinsertion). 
C)  the deletion of a base pair (microdeletion). 
D)  a substitution, deletion, or addition of one base-pair. 
A)  a base-pair substitution. 
B)  the gain of a base pair (microinsertion). 
C)  the deletion of a base pair (microdeletion). 
D)  a substitution, deletion, or addition of one base-pair.

Question 5

A mutant you made in the laboratory with 5-bromouracil suddenly regains the wild-type phenotype. You discuss this phenomenon with your advisor and colleagues, and they suggest you try transposon mutagenesis to avoid this problem and create stable mutants. Why would mutants created with 5-bromouracil be more likely to regain the wild-type phenotype than mutants created via transposon mutagenesis?

Accepted Answer

Because a point mutation involves only a

Question 6

A mutation that readily reverses to restore the original parental type would most likely be due to a(n)

Accepted Answer

A)  deletion. 
B)  insertion. 
C)  point mutation. 
D)  frameshift mutation. 
A)  deletion. 
B)  insertion. 
C)  point mutation. 
D)  frameshift mutation.

Question 7

The SOS regulatory system is activated by

Accepted Answer

A)  the activity of DNA polymerase IV. 
B)  DNA damage. 
C)  transcription of LexA. 
D)  repression of RecA. 
A)  the activity of DNA polymerase IV. 
B)  DNA damage. 
C)  transcription of LexA. 
D)  repression of RecA.

Question 8

Integration of linear transforming DNA into the chromosome

Accepted Answer

A)  is not required for the expression for the transformed genes. 
B)  is catalyzed by the RecA gene. 
C)  almost never occurs because restriction endonuclease will degrade the DNA before it is integrated. 
D)  only occurs in laboratory-based systems in artificial competent cells. 
A)  is not required for the expression for the transformed genes. 
B)  is catalyzed by the RecA gene. 
C)  almost never occurs because restriction endonuclease will degrade the DNA before it is integrated. 
D)  only occurs in laboratory-based systems in artificial competent cells.

Which process listed below allows genetic material to be transferred from a virus-like particle that lacks genes for its own replication?

F⁺ strains of Escherichia coli

Toxigenicity in Corynebacterium diphtheriae is due to phage conversion.

A ʺpoint mutationʺ refers to mutations involving

A mutation that readily reverses to restore the original parental type would most likely be due to a(n)

The SOS regulatory system is activated by

Integration of linear transforming DNA into the chromosome

The Microbial World

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Information Flow and Protein Processing

Microbial Growth and Its Control

Microbial Regulatory Systems

Molecular Biology of Microbial Growth

Viruses and Their Replication

Microbial Systems Biology

Viral Genomics, Diversity, and Ecology

Biotechnology and Synthetic Biology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Microorganisms

Diversity of Bacteria

Diversity of Archaea

Diversity of Microbial Eukarya

Taking the Measure of Microbial Systems

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Symbioses with Humans

Microbial Infection and Pathogenesis

Innate Immunity: Broadly Specific Host Defenses

Adaptive Immunity: Highly Specific Host Defenses

Clinical Microbiology and Immunology

Epidemiology

Person-to-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Waterborne and Foodborne Bacterial and Viral Diseases

Eukaryotic Pathogens: Fungi, Protozoans, and Helminths

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Exam 11: Genetics of Bacteria and Archaea

Which process listed below allows genetic material to be transferred from a virus-like particle that lacks genes for its own replication?

F⁺ strains of Escherichia coli

Toxigenicity in Corynebacterium diphtheriae is due to phage conversion.

A ʺpoint mutationʺ refers to mutations involving

A mutation that readily reverses to restore the original parental type would most likely be due to a(n)

The SOS regulatory system is activated by

Integration of linear transforming DNA into the chromosome

The Microbial World

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Information Flow and Protein Processing

Microbial Growth and Its Control

Microbial Regulatory Systems

Molecular Biology of Microbial Growth

Viruses and Their Replication

Microbial Systems Biology

Viral Genomics, Diversity, and Ecology

Biotechnology and Synthetic Biology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Microorganisms

Diversity of Bacteria

Diversity of Archaea

Diversity of Microbial Eukarya

Taking the Measure of Microbial Systems

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Symbioses with Humans

Microbial Infection and Pathogenesis

Innate Immunity: Broadly Specific Host Defenses

Adaptive Immunity: Highly Specific Host Defenses

Clinical Microbiology and Immunology

Epidemiology

Person-to-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Waterborne and Foodborne Bacterial and Viral Diseases

Eukaryotic Pathogens: Fungi, Protozoans, and Helminths

Filters