Question 1

Which of the following lists 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, IVF) A) and B)
G) A) and C)

Question 2

The combination of a virus's protein coat and nucleic acid core is called the (capsid/virion/nucleocapsid).

Accepted Answer

The answer of The combination of a virus's protein coat...

Question 3

Seven (orders/families/classes)represent the highest level of taxonomic rank used in classifying viruses.

Accepted Answer

The answer of Seven (orders/families/classes)represent the highest level of taxonomic...

Question 4

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 reticulumF) None of the above
G) A) and B)

Question 5

A cell is infected with a virus carrying an oncogene sequence in its genome.What process may occur if the oncogene is expressed in the infected cell?

Accepted Answer

A)   lysis
B)   neoplasia
C)   lysogeny
D)   latency
E)   both lysis and neoplasiaF) C) and D)
G) A) and B)

Question 6

The process in which viral capsids are removed within the infected cell is called (entry/disassembly/uncoating).

Accepted Answer

The answer of The process in which viral capsids are...

Question 7

Disadvantages of continuous cell cultures include

Accepted Answer

A)   they only grow for a limited number of generations.
B)   the expense of preparation.
C)   they may be significantly different genetically from the original source animal.
D)   viruses do not reliably infect them.
E)   they are both expense and have a limited number of division.F) A) and E)
G) D) and E)

Question 8

Some viruses have a dsDNA genome.Others may have a ________ genome.

Accepted Answer

A)   ssDNA
B)   dsRNA
C)   ssRNA
D)   ssRNA or dsRNA
E)   ssDNA, ssRNA, or dsRNAF) A) and C)
G) A) and B)

Question 9

Virus replication results in the death of the cell in ________ infection(s) .

Accepted Answer

A)   a lytic
B)   a latent
C)   a persistent
D)   a lysogenic
E)   both latent and persistentF) B) and E)
G) B) and D)

Question 10

Which of the following types of animal virus requires RNA-dependent RNA transcriptase to be replicated?

Accepted Answer

A)   +ssRNA viruses
B)   ssDNA viruses
C)   -ssRNA viruses
D)   retroviruses
E)   dsDNA virusesF) A) and B)
G) All of the above

Question 11

An animal virus that does not have an envelope is described as a(n)(naked/unenveloped/capsid)virion.

Accepted Answer

The answer of An animal virus that does not have...

Question 12

Prions are composed of a single protein called (plaque/BSE/PrP).

Accepted Answer

The answer of Prions are composed of a single protein...

Question 13

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

Question 14

Members of a virus family have the same type of nucleic acid.

Accepted Answer

A) True 
 B)False

Question 15

A(n) ________ is a virus that infects bacterial cells.

Accepted Answer

A)   virion
B)   prion
C)   bacteriophage
D)   nucleocapsid
E)   envelopeF) A) and E)
G) B) and E)

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

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

Correct Answer
verified

Virus replication results in the death of the cell in ________ infection(s) .

Correct Answer
verified

An animal virus that does not have an envelope is described as a(n)(naked/unenveloped/capsid)virion.

Correct Answer
verified

Disadvantages of continuous cell cultures include

Correct Answer
verified

Prions are composed of a single protein called (plaque/BSE/PrP).

Correct Answer
verified

The combination of a virus's protein coat and nucleic acid core is called the (capsid/virion/nucleocapsid).

Correct Answer
verified

A(n) ________ is a virus that infects bacterial cells.

Correct Answer
verified

The process in which viral capsids are removed within the infected cell is called (entry/disassembly/uncoating).

Correct Answer
verified

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?

Correct Answer
verified

Which of the following types of animal virus requires RNA-dependent RNA transcriptase to be replicated?

Correct Answer
verified

A cell is infected with a virus carrying an oncogene sequence in its genome.What process may occur if the oncogene is expressed in the infected cell?

Correct Answer
verified

Members of a virus family have the same type of nucleic acid.

Correct Answer
verified

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

Correct Answer
verified

Seven (orders/families/classes)represent the highest level of taxonomic rank used in classifying viruses.

Correct Answer
verified

Some viruses have a dsDNA genome.Others may have a ________ genome.

Correct Answer
verified

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

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

Correct AnswerverifiedShow Answer

Virus replication results in the death of the cell in ________ infection(s) .

Correct AnswerverifiedShow Answer

An animal virus that does not have an envelope is described as a(n)(naked/unenveloped/capsid)virion.

Correct AnswerverifiedShow Answer

Disadvantages of continuous cell cultures include

Correct AnswerverifiedShow Answer

Prions are composed of a single protein called (plaque/BSE/PrP).

Correct AnswerverifiedShow Answer

The combination of a virus's protein coat and nucleic acid core is called the (capsid/virion/nucleocapsid).

Correct AnswerverifiedShow Answer

A(n) ________ is a virus that infects bacterial cells.

Correct AnswerverifiedShow Answer

The process in which viral capsids are removed within the infected cell is called (entry/disassembly/uncoating).

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Which of the following types of animal virus requires RNA-dependent RNA transcriptase to be replicated?

Correct AnswerverifiedShow Answer

A cell is infected with a virus carrying an oncogene sequence in its genome.What process may occur if the oncogene is expressed in the infected cell?

Correct AnswerverifiedShow Answer

Members of a virus family have the same type of nucleic acid.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Seven (orders/families/classes)represent the highest level of taxonomic rank used in classifying viruses.

Correct AnswerverifiedShow Answer

Some viruses have a dsDNA genome.Others may have a ________ genome.

Correct AnswerverifiedShow Answer

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