Question 1

The outermost layer of a virion fulfills which of the following functions of the virus?

Accepted Answer

A)  replication 
B)  protection 
C)  recognition 
D)  both protection and recognition 
E)  both recognition and replication 
A)  replication 
B)  protection 
C)  recognition 
D)  both protection and recognition 
E)  both recognition and replication

Question 2

Which of the following is a feature shared by viruses and living organisms?

Accepted Answer

A)  the ability to increase in size 
B)  metabolic capability 
C)  possession of a genome that directs synthesis of materials necessary for replication 
D)  presence of cytoplasm 
E)  responsiveness 
A)  the ability to increase in size 
B)  metabolic capability 
C)  possession of a genome that directs synthesis of materials necessary for replication 
D)  presence of cytoplasm 
E)  responsiveness

Question 3

Uncontrolled cell division in animals is known as (metastasis/neoplasia/cancer).

Accepted Answer

The answer of Uncontrolled cell division in animals is known...

Question 4

Compare and contrast the ways in which animal, plant, and bacterial viruses gain entry into their host cells.

Accepted Answer

Because cells have different types of ba

Question 5

A scientist discovers a new virus associated with a cancer. She is able to culture it in the laboratory and begins to analyze it. What features will help her determine the virusʹ classification? How does this help her understand the virusʹ mechanism for causing cancer?

Accepted Answer

Characterization of the nucleic acid pre

Question 6

Bacteriophage release is a gradual process in which small numbers are released at a time.

Accepted Answer

A) True 
 B)False

Question 7

The first virus isolated, Tobacco mosaic virus, has a (complex/helical/polyhedral) capsid morphology, which facilitated its isolation.

Accepted Answer

The answer of The first virus isolated, Tobacco mosaic virus,...

Question 8

Genes that play a role in proper cell division but may also play a role in some types of cancer are called (oncogenes/protooncogenes/promoters).

Accepted Answer

The answer of Genes that play a role in proper...

Question 9

The shape of a virion is a function of the of the virus.

Accepted Answer

A)  capsid 
B)  cell type of the host cell 
C)  envelope 
D)  type of genome material 
E)  size of the genome material 
A)  capsid 
B)  cell type of the host cell 
C)  envelope 
D)  type of genome material 
E)  size of the genome material

Question 10

Assembly of new viruses is a process that usually requires the direction of a variety of viral and cellular enzymes.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following membranes can give rise to a viral envelope?

Accepted Answer

A)  the nuclear membrane 
B)  the endoplasmic reticulum 
C)  the cytoplasmic membrane 
D)  the nuclear and cytoplasmic membranes 
E)  the nuclear and cytoplasmic membranes, and the endoplasmic reticulum 
A)  the nuclear membrane 
B)  the endoplasmic reticulum 
C)  the cytoplasmic membrane 
D)  the nuclear and cytoplasmic membranes 
E)  the nuclear and cytoplasmic membranes, and the endoplasmic reticulum

Question 12

Prions cause disease in

Accepted Answer

A)  bacteria. 
B)  mammals. 
C)  fungi. 
D)  birds. 
E)  plants. 
A)  bacteria. 
B)  mammals. 
C)  fungi. 
D)  birds. 
E)  plants.

Question 13

Host specificity of a virus is due to

Accepted Answer

A)  the presence of an envelope. 
B)  particular genes that it shares with the infected cell. 
C)  differences in size between the virus and the host cell. 
D)  interactions between viral and cellular surface molecules. 
E)  the presence or absence of a cell wall on the host cell. 
A)  the presence of an envelope. 
B)  particular genes that it shares with the infected cell. 
C)  differences in size between the virus and the host cell. 
D)  interactions between viral and cellular surface molecules. 
E)  the presence or absence of a cell wall on the host cell.

Question 14

One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?

Accepted Answer

A) 	dsRNA viruses 
B) 	-ssRNA viruses 
C)  +ssRNA viruses 
D) 	retroviruses 
E) 	both +ssRNA and -ssRNA viruses 
A) 	dsRNA viruses 
B) 	-ssRNA viruses 
C)  +ssRNA viruses 
D) 	retroviruses 
E) 	both +ssRNA and -ssRNA viruses

Question 15

The virions shown in the figure have a (polyhedral/helical/complex) capsid.

Accepted Answer

The answer of   The virions shown in the...

The outermost layer of a virion fulfills which of the following functions of the virus?

Which of the following is a feature shared by viruses and living organisms?

Uncontrolled cell division in animals is known as (metastasis/neoplasia/cancer).

Compare and contrast the ways in which animal, plant, and bacterial viruses gain entry into their host cells.

A scientist discovers a new virus associated with a cancer. She is able to culture it in the laboratory and begins to analyze it. What features will help her determine the virusʹ classification? How does this help her understand the virusʹ mechanism for causing cancer?

Bacteriophage release is a gradual process in which small numbers are released at a time.

The first virus isolated, Tobacco mosaic virus, has a (complex/helical/polyhedral) capsid morphology, which facilitated its isolation.

Genes that play a role in proper cell division but may also play a role in some types of cancer are called (oncogenes/protooncogenes/promoters).

The shape of a virion is a function of the of the virus.

Assembly of new viruses is a process that usually requires the direction of a variety of viral and cellular enzymes.

Which of the following membranes can give rise to a viral envelope?

Prions cause disease in

Host specificity of a virus is due to

One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?

The virions shown in the figure have a (polyhedral/helical/complex) capsid.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Environmental Microbiology

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Exam 13: Characterizing and Classifying Viruses, Viroids, and Prions

The outermost layer of a virion fulfills which of the following functions of the virus?

Which of the following is a feature shared by viruses and living organisms?

Uncontrolled cell division in animals is known as (metastasis/neoplasia/cancer).

Compare and contrast the ways in which animal, plant, and bacterial viruses gain entry into their host cells.

A scientist discovers a new virus associated with a cancer. She is able to culture it in the laboratory and begins to analyze it. What features will help her determine the virusʹ classification? How does this help her understand the virusʹ mechanism for causing cancer?

Bacteriophage release is a gradual process in which small numbers are released at a time.

The first virus isolated, Tobacco mosaic virus, has a (complex/helical/polyhedral) capsid morphology, which facilitated its isolation.

Genes that play a role in proper cell division but may also play a role in some types of cancer are called (oncogenes/protooncogenes/promoters).

The shape of a virion is a function of the of the virus.

Assembly of new viruses is a process that usually requires the direction of a variety of viral and cellular enzymes.

Which of the following membranes can give rise to a viral envelope?

Prions cause disease in

Host specificity of a virus is due to

One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?

The virions shown in the figure have a (polyhedral/helical/complex) capsid.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Environmental Microbiology

Filters