Question 1

Which of the following represents a virus family name?

Accepted Answer

A)   Herpes simplex virus
B)   Herpesviridae
C)   Picornavirus
D)   Enterovirus
E)   Hepatitis B virusF) C) and D)
G) All of the above

Question 2

Helical and icosahedral are terms used to describe the shapes of a virus

Accepted Answer

A)   spike.
B)   capsomere.
C)   envelope.
D)   capsid.
E)   core.F) A) and B)
G) A) and E)

Question 3

Spikes are glycoproteins of the virus capsid.

Accepted Answer

A) True 
 B)False

Question 4

Compare and contrast viruses, prions, and viroids.

Accepted Answer

Viruses, prions, and viroids are all inf...

Question 5

Which body system is mainly affected by Creutzfeldt-Jakob disease?

Accepted Answer

A)   digestive system
B)   genitourinary system
C)   nervous system
D)   circulatory system
E)   respiratory systemF) C) and E)
G) C) and D)

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called

Accepted Answer

A)   latent
B)   oncogenic.
C)   prions.
D)   viroids.
E)   delta agents.F) All of the above
G) A) and E)

Question 8

Viral replication can involve the copying of RNA in an RNA virus.

Accepted Answer

A) True 
 B)False

Question 9

Diagnosis of viral infections sometimes involves analyzing the patient's blood for specific _____ that the immune system produced against the virus.

Accepted Answer

The answer of Diagnosis of viral infections sometimes involves analyzing...

Question 10

All of the following pertain to virus envelopes except they

Accepted Answer

A)   are gained as a virus leaves the host cell membrane.
B)   are found primarily on animal viruses.
C)   contain special virus proteins.
D)   help the virus particle attach to host cells.
E)   are located between the capsid and nucleic acid.F) None of the above
G) All of the above

Question 11

Viruses acquire envelopes around their nucleocapsids during

Accepted Answer

A)   replication.
B)   assembly.
C)   adsorption.
D)   release.
E)   penetration.F) All of the above
G) B) and D)

Question 12

Discuss at least six characteristics that are unique to viruses compared to other microorganisms.

Accepted Answer

1. Non-cellular structure: Unlike other ...

Question 13

Which of the following parts of a virus is/are not always present?

Accepted Answer

A)   envelope
B)   nucleic acid
C)   capsid
D)   capsomers
E)   None of these choices are optional parts of a virus.F) A) and E)
G) A) and B)

Question 14

Viruses that infect bacteria are specifically called _____.

Accepted Answer

The answer of Viruses that infect bacteria are specifically called...

Question 15

The correct sequence of events in viral multiplication is

Accepted Answer

A)   penetration, replication, maturation, adsorption, assembly, release.
B)   replication, penetration, maturation, assembly, absorption, release.
C)   adsorption, penetration, replication, maturation, assembly, release.
D)   assembly, maturation, replication, release, penetration, adsorption.
E)   adsorption, release, maturation, replication, assembly, penetration.F) B) and E)
G) B) and D)

Question 16

While of the following techniques or tools has provided information regarding the nature of viruses, which one had to be developed before the genetics, biochemistry, and life cycles of viruses could be thoroughly studied?

Accepted Answer

A)   scanning electron microscopy
B)   viral cultivation techniques
C)   transmission electron microscopy
D)   serological techniquesE) All of the above
F) C) and D)

Question 17

Which is incorrect about prophages?

Accepted Answer

A)   present when the virus is in lysogeny
B)   formed when viral DNA enters the bacterial chromosome
C)   replicated with host DNA and passed on to progeny
D)   always lyse the host cells
E)   occur when temperate phages enter host cellsF) A) and B)
G) A) and C)

Question 18

Creutzfeldt-Jakob disease is

Accepted Answer

A)   caused by a chronic latent virus.
B)   initiated by an oncogenic virus.
C)   caused by a viroid.
D)   a spongiform encephalopathy of humans.
E)   also called "Mad Cow disease".F) B) and E)
G) A) and C)

Question 19

Infectious naked strands of RNA are called

Accepted Answer

A)   viroids.
B)   phages.
C)   prions.
D)   oncogenic viruses.
E)   spikes.F) A) and B)
G) A) and E)

Question 20

Infectious protein particles are called

Accepted Answer

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

Exam 6: An Introduction to Viruses

Infectious protein particles are called

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Which of the following represents a virus family name?

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Creutzfeldt-Jakob disease is

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Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called

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Viral replication can involve the copying of RNA in an RNA virus.

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Infectious naked strands of RNA are called

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While of the following techniques or tools has provided information regarding the nature of viruses, which one had to be developed before the genetics, biochemistry, and life cycles of viruses could be thoroughly studied?

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Diagnosis of viral infections sometimes involves analyzing the patient's blood for specific _____ that the immune system produced against the virus.

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Viruses acquire envelopes around their nucleocapsids during

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Which is incorrect about prophages?

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Compare and contrast viruses, prions, and viroids.

Correct AnswerAnswered by ExamLex AIViruses, prions, and viroids are all inf...View AnswerShow Answer

Discuss at least six characteristics that are unique to viruses compared to other microorganisms.

Correct AnswerAnswered by ExamLex AI1. Non-cellular structure: Unlike other ...View AnswerShow Answer

Spikes are glycoproteins of the virus capsid.

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Viruses that infect bacteria are specifically called _____.

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

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All of the following pertain to virus envelopes except they

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Which body system is mainly affected by Creutzfeldt-Jakob disease?

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Helical and icosahedral are terms used to describe the shapes of a virus

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The correct sequence of events in viral multiplication is

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Which of the following parts of a virus is/are not always present?

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Answered by ExamLex AI
Viruses, prions, and viroids are all inf...
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Answered by ExamLex AI
1. Non-cellular structure: Unlike other ...
View Answer

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