Question 1

The primary purpose(s)  of viral cultivation is/are to

Accepted Answer

A)  isolate and identify viruses in clinical specimens.
B)  prepare viruses for vaccines.
C)  do detailed research on viral structure, lifestyle, genetics, and effects on host cells.
D)  perform wide-scale harvesting of viruses.
E)  All of the choices are correct.F) A) and C)
G) A) and B)

Question 2

Host cells of viruses include ______.

Accepted Answer

A)  humans and other animals
B)  plants and fungi
C)  bacteria
D)  protozoa and algae
E)  All of the choices are correct.F) A) and E)
G) A) and D)

Question 3

Spikes are glycoproteins that can be found projecting from the viral capsid.

Accepted Answer

A) True 
 B)False

Question 4

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)  makes the virus very susceptible to drug therapy.F) A) and B)
G) D) and E)

Question 5

A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.

Accepted Answer

A)  embryo
B)  cell
C)  plaque
D)  bacteriophage
E)  eggF) A) and B)
G) C) and D)

Question 6

When a bacterium acquires a trait from its temperate phage, it is called ______.

Accepted Answer

A)  transformation
B)  lysogenic conversion
C)  viral persistence
D)  transcription
E)  translationF) A) and D)
G) B) and E)

Question 7

New, nonenveloped virus release occurs by ______.

Accepted Answer

A)  lysis
B)  budding
C)  exocytosis
D)  both lysis and budding
E)  both budding and exocytosisF) A) and E)
G) A) and B)

Question 8

In transduction, the viral genome

Accepted Answer

A)  initiates lysis of the host.
B)  includes DNA from the previous host.
C)  is replicated in the cytoplasm.
D)  is replicated in the nucleus.E) A) and B)
F) C) and D)

Question 9

Viral nucleic acid types include which of the following?

Accepted Answer

A)  Double-stranded DNA
B)  Single-stranded DNA
C)  Double-stranded RNA
D)  Single-stranded RNA
E)  All of the choices are correct.F) B) and D)
G) A) and B)

Question 10

The correct sequence of events in viral multiplication is

Accepted Answer

A)  penetration, uncoating, synthesis, adsorption, assembly, and release.
B)  uncoating, penetration, synthesis, assembly, absorption, and release.
C)  adsorption, penetration, uncoating, synthesis, assembly, and release.
D)  assembly, synthesis, uncoating, release, penetration, and adsorption.
E)  adsorption, release, synthesis, uncoating, assembly, and penetration.F) A) and B)
G) None of the above

Question 11

Using species names for viruses is controversial since viruses are not considered living organisms, and they change over time so characteristics that may be used for speciation are unstable.

Accepted Answer

A) True 
 B)False

Question 12

Viruses are not filterable.

Accepted Answer

A) True 
 B)False

Question 13

Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.

Accepted Answer

A) True 
 B)False

Question 14

Uncoating of viral nucleic acid

Accepted Answer

A)  does not occur in bacteriophage multiplication.
B)  involves enzymatic destruction of the capsid.
C)  occurs during penetration in the multiplication cycle.
D)  occurs before replication.
E)  All of the choices are correct.F) A) and E)
G) C) and E)

Question 15

Which of the following will not support viral cultivation?

Accepted Answer

A)  Live lab animals
B)  Embryonated bird eggs
C)  Primary cell cultures
D)  Continuous cell cultures
E)  All of the choices will support viral cultivation.F) A) and B)
G) B) and E)

Question 16

In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.

Accepted Answer

A)  nucleus; cytoplasm
B)  cytoplasm; cell membrane
C)  cell membrane; cytoplasm
D)  cytoplasm; nucleus
E)  nucleus; endoplasmic reticulumF) B) and E)
G) B) and D)

Exam 6: An Introduction to the Viruses

Viral nucleic acid types include which of the following?

Correct Answer
verified

Using species names for viruses is controversial since viruses are not considered living organisms, and they change over time so characteristics that may be used for speciation are unstable.

Correct Answer
verified

When a bacterium acquires a trait from its temperate phage, it is called ______.

Correct Answer
verified

Uncoating of viral nucleic acid

Correct Answer
verified

In transduction, the viral genome

Correct Answer
verified

A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.

Correct Answer
verified

New, nonenveloped virus release occurs by ______.

Correct Answer
verified

In general, most DNA viruses multiply in the host cell's _, while most RNA viruses multiply in the host cell's _.

Correct Answer
verified

Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.

Correct Answer
verified

The primary purpose(s) of viral cultivation is/are to

Correct Answer
verified

The envelope of enveloped viruses

Correct Answer
verified

Which of the following will not support viral cultivation?

Correct Answer
verified

Viruses are not filterable.

Correct Answer
verified

Spikes are glycoproteins that can be found projecting from the viral capsid.

Correct Answer
verified

Host cells of viruses include ______.

Correct Answer
verified

The correct sequence of events in viral multiplication is

Correct Answer
verified

Exam 6: An Introduction to the Viruses

Viral nucleic acid types include which of the following?

Correct AnswerverifiedShow Answer

Using species names for viruses is controversial since viruses are not considered living organisms, and they change over time so characteristics that may be used for speciation are unstable.

Correct AnswerverifiedShow Answer

When a bacterium acquires a trait from its temperate phage, it is called ______.

Correct AnswerverifiedShow Answer

Uncoating of viral nucleic acid

Correct AnswerverifiedShow Answer

In transduction, the viral genome

Correct AnswerverifiedShow Answer

A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.

Correct AnswerverifiedShow Answer

New, nonenveloped virus release occurs by ______.

Correct AnswerverifiedShow Answer

In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.

Correct AnswerverifiedShow Answer

Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.

Correct AnswerverifiedShow Answer

The primary purpose(s) of viral cultivation is/are to

Correct AnswerverifiedShow Answer

The envelope of enveloped viruses

Correct AnswerverifiedShow Answer

Which of the following will not support viral cultivation?

Correct AnswerverifiedShow Answer

Viruses are not filterable.

Correct AnswerverifiedShow Answer

Spikes are glycoproteins that can be found projecting from the viral capsid.

Correct AnswerverifiedShow Answer

Host cells of viruses include ______.

Correct AnswerverifiedShow Answer

The correct sequence of events in viral multiplication is

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In general, most DNA viruses multiply in the host cell's _, while most RNA viruses multiply in the host cell's _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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