Question 1

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 correct.F) C) and D)
G) A) and D)

Question 2

Discuss the criteria used for classifying viruses into families and genera.

Accepted Answer

Viruses are classified into families and...

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

Bacteriophages do not undergo adsorption to specific host cell receptors prior to penetration.

Accepted Answer

A) True 
 B)False

Question 5

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) C) and D)
G) B) and E)

Question 6

The capsomers are made of

Accepted Answer

A)  DNA.
B)  RNA.
C)  lipids.
D)  protein.
E)  carbohydrate.F) A) and C)
G) A) and B)

Question 7

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

Accepted Answer

A)  digestive
B)  genitourinary
C)  nervous
D)  circulatory
E)  respiratoryF) A) and C)
G) A) and D)

Question 8

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)  cause lysis of host cells
E)  occur when temperate phages enter host cellsF) A) and B)
G) All of the above

Question 9

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

Accepted Answer

The answer of A common method for cultivating viruses in...

Question 10

Viruses that consist of only a nucleocapsid are considered

Accepted Answer

A)  simple viruses.
B)  complex viruses.
C)  naked viruses.
D)  viroids.
E)  incomplete viruses.F) A) and D)
G) B) and C)

Question 11

Viruses acquire envelopes around their nucleocapsids during

Accepted Answer

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

Question 12

Classification of viruses into families involves determining all the following characteristics except

Accepted Answer

A)  type of nucleic acid.
B)  type of capsid.
C)  presence of an envelope.
D)  biochemical reactions.
E)  nucleic acid strand number.F) All of the above
G) B) and E)

Question 13

The adeno-associated virus (AAV) and the delta agent are prions.

Accepted Answer

A) True 
 B)False

Question 14

How do enveloped animal viruses exit their host?

Accepted Answer

A)  Budding or exocytosis
B)  Bursting the host cell
C)  Rupturing the virus
D)  Endocytosis
E)  None of these are correctF) A) and B)
G) B) and C)

Question 15

Discuss why it is difficult to trace the origins of viruses and why they are important.

Accepted Answer

Tracing the origins of viruses can be di...

Question 16

Viral growth in bird embryos can cause discrete, opaque spots in the embryonic membranes called

Accepted Answer

A)  lysogeny.
B)  budding.
C)  plaques.
D)  cytopathic effects.
E)  pocks.F) A) and B)
G) A) and C)

Question 17

The virus-induced, specific damage to the host cell that can be seen in a light microscope is called

Accepted Answer

A)  lysogeny.
B)  budding.
C)  plaques.
D)  cytopathic effects.
E)  pocks.F) All of the above
G) C) and D)

Question 18

Compare and contrast viruses, prions, and viroids.

Accepted Answer

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

Question 19

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) C) and E)
G) B) and C)

Question 20

One of the principal capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as an _____ capsid.

Accepted Answer

The answer of One of the principal capsid shapes is...

Exam 6: An Introduction to Viruses

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

Correct AnswerverifiedShow Answer

Uncoating of viral nucleic acid

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Satellite viruses are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Compare and contrast viruses, prions, and viroids.

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

Discuss why it is difficult to trace the origins of viruses and why they are important.

Correct AnswerAnswered by ExamLex AITracing the origins of viruses can be di...View AnswerShow Answer

Viral growth in bird embryos can cause discrete, opaque spots in the embryonic membranes called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The adeno-associated virus (AAV) and the delta agent are prions.

Correct AnswerverifiedShow Answer

One of the principal capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as an _____ capsid.

Correct AnswerverifiedShow Answer

Classification of viruses into families involves determining all the following characteristics except

Correct AnswerverifiedShow Answer

Discuss the criteria used for classifying viruses into families and genera.

Correct AnswerAnswered by ExamLex AIViruses are classified into families and...View AnswerShow Answer

How do enveloped animal viruses exit their host?

Correct AnswerverifiedShow Answer

The virus-induced, specific damage to the host cell that can be seen in a light microscope is called

Correct AnswerverifiedShow Answer

Viruses that consist of only a nucleocapsid are considered

Correct AnswerverifiedShow Answer

The capsomers are made of

Correct AnswerverifiedShow Answer

Viruses acquire envelopes around their nucleocapsids during

Correct AnswerverifiedShow Answer

Which is incorrect about prophages?

Correct AnswerverifiedShow Answer

Bacteriophages do not undergo adsorption to specific host cell receptors prior to penetration.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Viruses, prions, and viroids are all inf...
View Answer

Correct Answer
Answered by ExamLex AI
Tracing the origins of viruses can be di...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Viruses are classified into families and...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified