Question 1

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 2

Horizontal gene transfer in Archaea

Accepted Answer

A)  is infrequent in nature and therefore difficult to use for genetic studies in the laboratory. 
B)  has not been documented, thus all genetic studies of archaea are done via genomic sequencing. 
C)  frequently occurs in nature and has been used to perform genetic studies in the laboratory as well. 
D)  frequently occurs in nature, but there are very few laboratory studies because archaea do not cause human disease. 
A)  is infrequent in nature and therefore difficult to use for genetic studies in the laboratory. 
B)  has not been documented, thus all genetic studies of archaea are done via genomic sequencing. 
C)  frequently occurs in nature and has been used to perform genetic studies in the laboratory as well. 
D)  frequently occurs in nature, but there are very few laboratory studies because archaea do not cause human disease.

Question 3

Lysogeny is essential for the virulence of many pathogenic bacterial strains.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following would NOT be a trait of a resistance plasmid?

Accepted Answer

A)  It may carry antibiotic resistance genes. 
B)  It may carry heavy metal resistance genes. 
C)  It increases the host's growth rate. 
D)  It may undergo genetic recombination. 
A)  It may carry antibiotic resistance genes. 
B)  It may carry heavy metal resistance genes. 
C)  It increases the host's growth rate. 
D)  It may undergo genetic recombination.

Question 5

Consider a mutation in which the change is from UAC to UAU.Both codons specify the amino acid tyrosine.Which type of point mutation is this?

Accepted Answer

A)  silent mutation 
B)  nonsense mutation 
C)  missense mutation 
D)  frameshift mutation 
A)  silent mutation 
B)  nonsense mutation 
C)  missense mutation 
D)  frameshift mutation

Question 6

Microinsertions and microdeletions often result in ________ mutations.

Accepted Answer

A)  auxotrophic 
B)  advantageous 
C)  silent 
D)  frameshift 
A)  auxotrophic 
B)  advantageous 
C)  silent 
D)  frameshift

Question 7

Consider the following experiment.First,large populations of two mutant strains of Escherichia coli are mixed,each requiring a different,single amino acid.After plating them onto a minimal medium,45 colonies grew.Which of the following may explain this result?

Accepted Answer

A)  The colonies may be due to back mutation (reversion). 
B)  The colonies may be due to recombination. 
C)  Either A or B is possible. 
D)  Neither A nor B is possible. 
A)  The colonies may be due to back mutation (reversion). 
B)  The colonies may be due to recombination. 
C)  Either A or B is possible. 
D)  Neither A nor B is possible.

Question 8

The evolutionary significance of phage conversion likely stems from an effective alteration of host cells.

Accepted Answer

A) True 
 B)False

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

Horizontal gene transfer in Archaea

Lysogeny is essential for the virulence of many pathogenic bacterial strains.

Which of the following would NOT be a trait of a resistance plasmid?

Consider a mutation in which the change is from UAC to UAU.Both codons specify the amino acid tyrosine.Which type of point mutation is this?

Microinsertions and microdeletions often result in ________ mutations.

Consider the following experiment.First,large populations of two mutant strains of Escherichia coli are mixed,each requiring a different,single amino acid.After plating them onto a minimal medium,45 colonies grew.Which of the following may explain this result?

The evolutionary significance of phage conversion likely stems from an effective alteration of host cells.

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

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Exam 10: Genetics of Bacteria and Archaea

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

Horizontal gene transfer in Archaea

Lysogeny is essential for the virulence of many pathogenic bacterial strains.

Which of the following would NOT be a trait of a resistance plasmid?

Consider a mutation in which the change is from UAC to UAU.Both codons specify the amino acid tyrosine.Which type of point mutation is this?

Microinsertions and microdeletions often result in ________ mutations.

Consider the following experiment.First,large populations of two mutant strains of Escherichia coli are mixed,each requiring a different,single amino acid.After plating them onto a minimal medium,45 colonies grew.Which of the following may explain this result?

The evolutionary significance of phage conversion likely stems from an effective alteration of host cells.

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

Filters