Question 1

Which of the following places these items in the correct order for DNA- virus replication? 1. Maturation
2)  DNA synthesis
3)  Transcription
4)  Translation

Accepted Answer

A)   1; 2; 3; 4
B)   3; 4; 1; 2
C)   2; 3; 4; 1
D)   4; 1; 2; 3
E)   4; 3; 2; 1

Question 2

Figure 13.1
 
-The structures illustrated in Figure 13.1 are composed of

Accepted Answer

A)   DNA.
B)   Capsids.
C)   RNA.
D)   DNA or RNA.
E)   Capsomeres.

Question 3

How do all viruses differ from bacteria?

Accepted Answer

A)   Viruses are not composed of cells.
B)   Viruses do not have any nucleic acid.
C)   Viruses are filterable.
D)   Viruses do not reproduce.
E)   Viruses are obligate intracellular parasites.

Question 4

A virus's ability to infect an animal cell depends primarily upon the

Accepted Answer

A)   host cell's ability to phagocytize viral particles.
B)   type of viral nucleic acid.
C)   enzymatic activity of a host cell.
D)   presence of receptor sites on the cell membrane.
E)   presence of pili on the host cell wall.

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Which of the following statements provides the most significant support for the idea that viruses are nonliving chemicals?

Accepted Answer

A)   They are chemically simple.
B)   They are not composed of cells.
C)   They cause diseases similar to those caused by chemicals.
D)   They are filterable.
E)   They cannot reproduce themselves outside a host.

Question 7

The following steps occur during multiplication of retroviruses. Which is the fourth step?

Accepted Answer

A)   penetration
B)   uncoating
C)   synthesis of double- stranded DNA
D)   attachment
E)   synthesis of +RNA

Question 8

Bacteriophages and animal viruses do NOT differ significantly in which one of the following steps?

Accepted Answer

A)   uncoating
B)   attachment
C)   release
D)   penetration
E)   biosynthesis

Question 9

Generally, in an infection caused by a DNA- containing virus, the host animal cell supplies all of the following EXCEPT

Accepted Answer

A)   tRNA.
B)   nucleotides.
C)   RNA polymerase.
D)   DNA polymerase.
E)   None of the answers are correct; all of these are supplied by the host animal cell.

Question 10

What contributes to antigenic shift in influenza viruses?

Accepted Answer

A)   attachment spikes
B)   different virus subtypes
C)   a segmented genome
D)   ease of virus transmission
E)   worldwide distribution of the virus

Question 11

Binomial nomenclature is used to name viruses.

Accepted Answer

A) True 
 B)False

Question 12

The following steps occur during biosynthesis of a + strand RNA virus. What is the third step?

Accepted Answer

A)   penetration and uncoating
B)   synthesis of - strand RNA
C)   synthesis of viral proteins
D)   attachment
E)   synthesis of + strand RNA

Question 13

Glycoprotein spikes are found on the capsids of all viruses.

Accepted Answer

A) True 
 B)False

Question 14

A segmented genome can result in antigenic shift.

Accepted Answer

A) True 
 B)False

Question 15

An infectious protein is a

Accepted Answer

A)   prion.
B)   papovavirus.
C)   retrovirus.
D)   bacteriophage.
E)   viroid.

Exam 13: Viruses, Viroids, and Prions

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

Correct Answer
verified

Generally, in an infection caused by a DNA- containing virus, the host animal cell supplies all of the following EXCEPT

Correct Answer
verified

What contributes to antigenic shift in influenza viruses?

Correct Answer
verified

Glycoprotein spikes are found on the capsids of all viruses.

Correct Answer
verified

The following steps occur during biosynthesis of a + strand RNA virus. What is the third step?

Correct Answer
verified

Which of the following statements provides the most significant support for the idea that viruses are nonliving chemicals?

Correct Answer
verified

How do all viruses differ from bacteria?

Correct Answer
verified

A segmented genome can result in antigenic shift.

Correct Answer
verified

Figure 13.1 -The structures illustrated in Figure 13.1 are composed of

Correct Answer
verified

Bacteriophages and animal viruses do NOT differ significantly in which one of the following steps?

Correct Answer
verified

Binomial nomenclature is used to name viruses.

Correct Answer
verified

An infectious protein is a

Correct Answer
verified

Which of the following places these items in the correct order for DNA- virus replication? 1. Maturation 2) DNA synthesis 3) Transcription 4) Translation

Correct Answer
verified

A virus's ability to infect an animal cell depends primarily upon the

Correct Answer
verified

The following steps occur during multiplication of retroviruses. Which is the fourth step?

Correct Answer
verified

Exam 13: Viruses, Viroids, and Prions

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

Correct AnswerverifiedShow Answer

Generally, in an infection caused by a DNA- containing virus, the host animal cell supplies all of the following EXCEPT

Correct AnswerverifiedShow Answer

What contributes to antigenic shift in influenza viruses?

Correct AnswerverifiedShow Answer

Glycoprotein spikes are found on the capsids of all viruses.

Correct AnswerverifiedShow Answer

The following steps occur during biosynthesis of a + strand RNA virus. What is the third step?

Correct AnswerverifiedShow Answer

Which of the following statements provides the most significant support for the idea that viruses are nonliving chemicals?

Correct AnswerverifiedShow Answer

How do all viruses differ from bacteria?

Correct AnswerverifiedShow Answer

A segmented genome can result in antigenic shift.

Correct AnswerverifiedShow Answer

Figure 13.1 -The structures illustrated in Figure 13.1 are composed of

Correct AnswerverifiedShow Answer

Bacteriophages and animal viruses do NOT differ significantly in which one of the following steps?

Correct AnswerverifiedShow Answer

Binomial nomenclature is used to name viruses.

Correct AnswerverifiedShow Answer

An infectious protein is a

Correct AnswerverifiedShow Answer

Which of the following places these items in the correct order for DNA- virus replication? 1. Maturation 2) DNA synthesis 3) Transcription 4) Translation

Correct AnswerverifiedShow Answer

A virus's ability to infect an animal cell depends primarily upon the

Correct AnswerverifiedShow Answer

The following steps occur during multiplication of retroviruses. Which is the fourth step?

Correct AnswerverifiedShow Answer

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