Question 1

The use of transposons to generate mutations is a convenient way to create bacterial mutations in the laboratory.

Accepted Answer

A) True 
 B)False

Question 2

Toxigenicity in Corynebacterium diphtheriae is due to phase conversion (lysogenization with fi
phage).

Accepted Answer

A) True 
 B)False

Question 3

Lysogeny probably carries a strong selective advantage for the host cell because

Accepted Answer

A)  it confers resistance to infection by viruses of the same type. 
B)  it prevents cell lysis. 
C)  it confers resistance to infection by viruses of a different type (or strain). 
D)  of all of the above. 
A)  it confers resistance to infection by viruses of the same type. 
B)  it prevents cell lysis. 
C)  it confers resistance to infection by viruses of a different type (or strain). 
D)  of all of the above.

Question 4

Compare and contrast generalized transduction with specialized transduction.

Accepted Answer

Transduction as a whole is the transfer

Question 5

Drug resistance among enteric bacteria is spread rapidly by

Accepted Answer

A)  conjugative plasmids. 
B)  selection of mutants. 
C)  bacteriophages. 
D)  selective transmission. 
A)  conjugative plasmids. 
B)  selection of mutants. 
C)  bacteriophages. 
D)  selective transmission.

Question 6

A "point mutation" refers to mutations involving

Accepted Answer

A)  a base- pair substitution. 
B)  the deletion of a base pair (microdeletion). 
C)  the gain of a base pair (microinsertion). 
D)  any of the above. 
A)  a base- pair substitution. 
B)  the deletion of a base pair (microdeletion). 
C)  the gain of a base pair (microinsertion). 
D)  any of the above.

Question 7

Transposition is a(n)

Accepted Answer

A)  site- specific recombination event. 
B)  general recombination event. 
C)  homologous recombination event. 
D)  analogous recombination event. 
A)  site- specific recombination event. 
B)  general recombination event. 
C)  homologous recombination event. 
D)  analogous recombination event.

Question 8

Explain why HIV (an RNA virus) has a high mutation rate compared to a DNA genome.

Accepted Answer

DNA and RNA polymerases both make roughl

Question 9

If a bacterium carrying a plasmid that confers resistance to ampicillin is placed into medium without ampicillin, the loss of the plasmid is a phenomenon known as _________.

Accepted Answer

The answer of If a bacterium carrying a plasmid that...

Question 10

Why might transposon mutagenesis be favored over chemical mutagenesis?

Accepted Answer

The use of transposons such as Tn5 and T

Exam 10: Genetics of Bacteria and Arachaea

The use of transposons to generate mutations is a convenient way to create bacterial mutations in the laboratory.

Toxigenicity in Corynebacterium diphtheriae is due to phase conversion (lysogenization with fi phage).

Lysogeny probably carries a strong selective advantage for the host cell because

Compare and contrast generalized transduction with specialized transduction.

Drug resistance among enteric bacteria is spread rapidly by

A "point mutation" refers to mutations involving

Transposition is a(n)

Explain why HIV (an RNA virus) has a high mutation rate compared to a DNA genome.

If a bacterium carrying a plasmid that confers resistance to ampicillin is placed into medium without ampicillin, the loss of the plasmid is a phenomenon known as _________.

Why might transposon mutagenesis be favored over chemical mutagenesis?

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

Regulation of Gene Expression

Viruses and Virology

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Catabolism of Organic Compounds

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Growth Control

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

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