Question 1

Most viruses cannot be seen by light microscopy.

Accepted Answer

A) True 
 B)False

Question 2

The majority of cases of infant diarrhea are caused by what kind of virus?

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

Which of the following infectious particles do not have protein in their structure?

Accepted Answer

A)  bacteriophages 
B)  prions 
C)  animal viruses 
D)  viroids 
E)  both prions and viroids 
A)  bacteriophages 
B)  prions 
C)  animal viruses 
D)  viroids 
E)  both prions and viroids

Question 5

The infectious particles of fungi have RNA genomes and lack a capsid. They are therefore similar to

Accepted Answer

A)  bacteriophages. 
B)  enveloped viruses. 
C)  prions. 
D)  viroids. 
E)  lysogens. 
A)  bacteriophages. 
B)  enveloped viruses. 
C)  prions. 
D)  viroids. 
E)  lysogens.

Question 6

A(n) __________ is a 20-sided polyhedral capsid.

Accepted Answer

The answer of A(n) __________ is a 20-sided polyhedral capsid....

Question 7

The enzyme lysozyme is critical for which of the stages of a bacteriophage T4 infection cycle?

Accepted Answer

A)  entry 
B)  assembly 
C)  entry and release 
D)  synthesis 
E)  attachment 
A)  entry 
B)  assembly 
C)  entry and release 
D)  synthesis 
E)  attachment

Question 8

RNA viruses such as HIV require the activity of reverse __________ to become proviruses.

Accepted Answer

The answer of RNA viruses such as HIV require the...

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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 11

Put the following stages of a lytic replication cycle in order, from earliest to latest stages: I. Synthesis
II. Assembly
III. Attachment
IV. Release
V. Entry

Accepted Answer

A)  III, V, I, II, IV 
B)  III, II, V, I, IV 
C)  V, III, II, IV, I 
D)  I, III, V, II, IV 
E)  I, II, III, V, IV 
A)  III, V, I, II, IV 
B)  III, II, V, I, IV 
C)  V, III, II, IV, I 
D)  I, III, V, II, IV 
E)  I, II, III, V, IV

Question 12

Which of the following statements regarding virus taxonomy is true?

Accepted Answer

A)  Viruses are classified on the basis of the taxonomy of their host organisms. 
B)  Virus classes are well established. 
C)  Some virus family names are derived from the name of an important member of the family. 
D)  The species epithet is a latin descriptor of the virion structure. 
E)  Virus classes are based on the domain of the host organism. 
A)  Viruses are classified on the basis of the taxonomy of their host organisms. 
B)  Virus classes are well established. 
C)  Some virus family names are derived from the name of an important member of the family. 
D)  The species epithet is a latin descriptor of the virion structure. 
E)  Virus classes are based on the domain of the host organism.

Question 13

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 14

Virus replication results in the death of the cell in a(n) __________ infection.

Accepted Answer

A)  lytic 
B)  latent 
C)  persistent 
D)  oncogenic 
E)  both latent and persistent 
A)  lytic 
B)  latent 
C)  persistent 
D)  oncogenic 
E)  both latent and persistent

Question 15

Host specificity of a virus is due to

Accepted Answer

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

Question 16

Tumors invade other organs and tissues in a process called

Accepted Answer

A)  neoplasia. 
B)  a plaque assay. 
C)  latency. 
D)  budding. 
E)  metastasis. 
A)  neoplasia. 
B)  a plaque assay. 
C)  latency. 
D)  budding. 
E)  metastasis.

Question 17

Viral capsids are composed of subunits called __________.

Accepted Answer

The answer of Viral capsids are composed of subunits called...

Question 18

Viruses are shed slowly and steadily during

Accepted Answer

A)  lytic replication. 
B)  budding. 
C)  oncogenesis. 
D)  persistent infection. 
E)  latency. 
A)  lytic replication. 
B)  budding. 
C)  oncogenesis. 
D)  persistent infection. 
E)  latency.

Question 19

A(n) __________ is a clear zone on a bacterial lawn where cells have been killed by the activity of a bacteriophage.

Accepted Answer

The answer of A(n) __________ is a clear zone on...

Question 20

Viruses are primarily classified according to their

Accepted Answer

A)  type of nucleic acid. 
B)  type of life cycle. 
C)  number of chromosomes. 
D)  shape. 
E)  size. 
A)  type of nucleic acid. 
B)  type of life cycle. 
C)  number of chromosomes. 
D)  shape. 
E)  size.

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

Most viruses cannot be seen by light microscopy.

The majority of cases of infant diarrhea are caused by what kind of virus?

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

Which of the following infectious particles do not have protein in their structure?

The infectious particles of fungi have RNA genomes and lack a capsid. They are therefore similar to

A(n) __________ is a 20-sided polyhedral capsid.

The enzyme lysozyme is critical for which of the stages of a bacteriophage T4 infection cycle?

RNA viruses such as HIV require the activity of reverse __________ to become proviruses.

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

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

Put the following stages of a lytic replication cycle in order, from earliest to latest stages: I. Synthesis II. Assembly III. Attachment IV. Release V. Entry

Which of the following statements regarding virus taxonomy is true?

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

Virus replication results in the death of the cell in a(n) __________ infection.

Host specificity of a virus is due to

Tumors invade other organs and tissues in a process called

Viral capsids are composed of subunits called __________.

Viruses are shed slowly and steadily during

A(n) __________ is a clear zone on a bacterial lawn where cells have been killed by the activity of a bacteriophage.

Viruses are primarily classified according to their

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

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