Question 1

Viral tissue specificities are called ________.

Accepted Answer

A)  ranges
B)  virions
C)  receptacles
D)  tropisms
E)  uncoatingF) C) and D)
G) A) and B)

Question 2

A fully formed virus that can cause an infection in a host cell is called a virion.

Accepted Answer

A) True 
 B)False

Question 3

The envelope of enveloped viruses ________.

Accepted Answer

A)  is identical to the host plasma membrane
B)  is only composed of host endomembrane
C)  does not contain spikes
D)  is obtained by viral budding or exocytosis
E)  None of the choices are correctF) B) and E)
G) C) and D)

Question 4

Which of the following is not associated with every virus?

Accepted Answer

A)  Envelope
B)  Capsomeres
C)  Capsid
D)  Nucleic acid
E)  GenomeF) A) and D)
G) A) and B)

Question 5

Satellite viruses are ________.

Accepted Answer

A)  also called viroids
B)  dependent on other viruses for replication
C)  the cause of spongiform encephalopathies
D)  significant pathogens of plants
E)  All of the choices are correctF) B) and C)
G) None of the above

Question 6

Host range is limited by ________.

Accepted Answer

A)  type of nucleic acid in the virus
B)  age of the host cell
C)  type of host cell receptors on cell membrane
D)  size of the host cell
E)  All of the choices are correctF) B) and D)
G) All of the above

Question 7

Viruses acquire envelopes around their nucleocapsids during ________.

Accepted Answer

A)  replication
B)  assembly
C)  adsorption
D)  release
E)  penetrationF) None of the above
G) C) and D)

Question 8

An ideal antiviral drug would be one that ________.

Accepted Answer

A)  disrupted an integral viral process while causing little damage to the host cell
B)  killed the host cell thereby depriving the virus of its means to translate proteins
C)  killed both the virus and the host cell
D)  prevents translation by the host cell ribosome,depriving the virus of a means to replicateE) A) and C)
F) B) and D)

Question 9

Viruses mutate and some have not been discovered.

Accepted Answer

A) True 
 B)False

Question 10

The process of dissolving the envelope and capsid to release the viral nucleic acid is ________.

Accepted Answer

A)  adsorption
B)  penetration
C)  uncoating
D)  synthesis
E)  assemblyF) All of the above
G) C) and D)

Question 11

Viral genetic studies,vaccine development and clinical identification would not be possible without the ability to ________.

Accepted Answer

A)  culture viruses in vivo and in vitro
B)  transform human cells into cancerous cells
C)  studying prions in neurological tissue of animals
D)  activate lysogenic induction in bacteriophagesE) A) and D)
F) B) and C)

Question 12

Infectious protein particles are called ________.

Accepted Answer

A)  viroids
B)  phages
C)  prions
D)  oncogenic viruses
E)  spikesF) A) and B)
G) All of the above

Question 13

Reverse transcriptase synthesizes ________.

Accepted Answer

A)  the positive RNA strand from a negative RNA strand
B)  a negative RNA strand from a positive RNA strand
C)  RNA from DNA
D)  DNA from RNA
E)  None of the choices are correctF) All of the above
G) B) and C)

Question 14

Viruses are not filterable.

Accepted Answer

A) True 
 B)False

Question 15

Cells grown in culture form a(n) ________.

Accepted Answer

A)  monolayer
B)  bilayer
C)  aggregate
D)  plaque
E)  None of the choices are correct.F) B) and E)
G) A) and B)

Question 16

Prophages can be activated into viral replication and enter the lytic cycle.

Accepted Answer

A) True 
 B)False

Question 17

A(n) ________ is the protein shell around the nucleic acid core of a virus.

Accepted Answer

A)  capsomere
B)  capsid
C)  spike
D)  envelope
E)  monolayerF) C) and E)
G) C) and D)

Question 18

Viruses are simple,noncellular,and lack ribosomes.

Accepted Answer

A) True 
 B)False

Question 19

During lysogeny,an inactive prophage state occurs when the viral DNA is inserted into the ________.

Accepted Answer

A)  host cytoplasm
B)  host nucleus
C)  host nucleolus
D)  host DNA
E)  host cell membraneF) C) and E)
G) B) and C)

Question 20

The core of every virus particle always contains ________.

Accepted Answer

A)  DNA
B)  capsomeres
C)  enzymes
D)  DNA and RNA
E)  either DNA or RNAF) A) and E)
G) B) and E)

Exam 5: Viral Structure and Multiplication

Prophages can be activated into viral replication and enter the lytic cycle.

Correct AnswerverifiedShow Answer

Viral tissue specificities are called ________.

Correct AnswerverifiedShow Answer

Satellite viruses are ________.

Correct AnswerverifiedShow Answer

Which of the following is not associated with every virus?

Correct AnswerverifiedShow Answer

Viruses acquire envelopes around their nucleocapsids during ________.

Correct AnswerverifiedShow Answer

Viruses are not filterable.

Correct AnswerverifiedShow Answer

The core of every virus particle always contains ________.

Correct AnswerverifiedShow Answer

Viral genetic studies,vaccine development and clinical identification would not be possible without the ability to ________.

Correct AnswerverifiedShow Answer

A(n) ________ is the protein shell around the nucleic acid core of a virus.

Correct AnswerverifiedShow Answer

Viruses mutate and some have not been discovered.

Correct AnswerverifiedShow Answer

Infectious protein particles are called ________.

Correct AnswerverifiedShow Answer

Viruses are simple,noncellular,and lack ribosomes.

Correct AnswerverifiedShow Answer

The envelope of enveloped viruses ________.

Correct AnswerverifiedShow Answer

During lysogeny,an inactive prophage state occurs when the viral DNA is inserted into the ________.

Correct AnswerverifiedShow Answer

A fully formed virus that can cause an infection in a host cell is called a virion.

Correct AnswerverifiedShow Answer

Reverse transcriptase synthesizes ________.

Correct AnswerverifiedShow Answer

Cells grown in culture form a(n) ________.

Correct AnswerverifiedShow Answer

An ideal antiviral drug would be one that ________.

Correct AnswerverifiedShow Answer

The process of dissolving the envelope and capsid to release the viral nucleic acid is ________.

Correct AnswerverifiedShow Answer

Host range is limited by ________.

Correct AnswerverifiedShow Answer

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