Question 1

Glycoprotein spikes are found on the capsids of all viruses.

Accepted Answer

A) True 
 B)False

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

Question 3

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. 
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 4

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

Accepted Answer

A) True 
 B)False

Question 5

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

Question 6

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. 
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 7

Binomial nomenclature is used to name viruses.

Accepted Answer

A) True 
 B)False

Question 8

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

Question 9

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

Question 10

A segmented genome can result in antigenic shift.

Accepted Answer

A) True 
 B)False

Question 11

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 
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 12

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

Question 13

An infectious protein is a

Accepted Answer

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

Question 14

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. 
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 15

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. 
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.

Exam 13: Viruses, Viroids, and Prions

Glycoprotein spikes are found on the capsids of all viruses.

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

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

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

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

How do all viruses differ from bacteria?

Binomial nomenclature is used to name viruses.

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

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

A segmented genome can result in antigenic shift.

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

What contributes to antigenic shift in influenza viruses?

An infectious protein is a

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

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

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant Dna

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Filters