Question 1

Bacteriophages are released quickly and in large quantities from an infected cell.

Accepted Answer

A) True 
 B)False

Question 2

The viral genome codes for all the proteins in the viral envelope.

Accepted Answer

A) True 
 B)False

Question 3

The combination of a virus's protein coat and nucleic acid core is called the .

Accepted Answer

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

Question 4

An icosahedron is a type of capsid.

Accepted Answer

The answer of An icosahedron is a type of capsid....

Question 5

All of the following statements are true of lambda phage EXCEPT:

Accepted Answer

A)  It can be present as a provirus. 
B)  It has a lytic phase. 
C)  It has a double- stranded DNA genome. 
D)  It is a temperate phage. 
E)  It is a lysogenic phage. 
A)  It can be present as a provirus. 
B)  It has a lytic phase. 
C)  It has a double- stranded DNA genome. 
D)  It is a temperate phage. 
E)  It is a lysogenic phage.

Question 6

The majority of cases of infant diarrhea are caused by what kind of virus?

Accepted Answer

A)  retroviruses 
B)  dsRNA viruses 
C)  +ssRNA viruses 
D)  - ssRNA viruses 
E)  dsDNA viruses 
A)  retroviruses 
B)  dsRNA viruses 
C)  +ssRNA viruses 
D)  - ssRNA viruses 
E)  dsDNA viruses

Question 7

Why is the synthesis of mRNA a central issue for all viruses? How do different types of viruses achieve this goal?

Accepted Answer

One of the ways in which a virus gains c

Question 8

The broadest classification currently used for all viruses is the

Accepted Answer

A)  genus. 
B)  order. 
C)  class. 
D)  phylum. 
E)  family. 
A)  genus. 
B)  order. 
C)  class. 
D)  phylum. 
E)  family.

Question 9

During the intracellular state, a virus exists solely as a

Accepted Answer

A)  nucleic acid. 
B)  protein. 
C)  lipid. 
D)  Both B and C are correct. 
E)  Both A and C are correct. 
A)  nucleic acid. 
B)  protein. 
C)  lipid. 
D)  Both B and C are correct. 
E)  Both A and C are correct.

Question 10

Reverse transcriptase is associated with which of the following?

Accepted Answer

A)  retroviruses 
B)  dsDNA viruses 
C)  dsRNA viruses 
D)  +ssRNA viruses 
E)  - ssRNA viruses 
A)  retroviruses 
B)  dsDNA viruses 
C)  dsRNA viruses 
D)  +ssRNA viruses 
E)  - ssRNA viruses

Question 11

Which of the following have been the least characterized?

Accepted Answer

A)  plant viruses 
B)  All of these are well characterized. 
C)  animal viruses 
D)  bacterial viruses 
E)  fungal viruses 
A)  plant viruses 
B)  All of these are well characterized. 
C)  animal viruses 
D)  bacterial viruses 
E)  fungal viruses

Question 12

The presence of lysogenic phages can change a harmless bacterium into a pathogen via a process known as
.

Accepted Answer

lysogenic

Question 13

Why do only some viruses cause cancer?

Accepted Answer

Cancer is a result of genetic defects th

Question 14

RNA is viral single- stranded RNA that can act directly as mRNA.

Accepted Answer

The answer of RNA is viral single- stranded RNA that...

Question 15

Assembly of new viruses is a process that usually requires a variety of viral and cellular enzymes to direct it.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A)  the cytoplasmic membrane 
B)  the endoplasmic reticulum 
C)  the nuclear membrane 
D)  Both A and B are correct. 
E)  A, B, and C are correct. 
A)  the cytoplasmic membrane 
B)  the endoplasmic reticulum 
C)  the nuclear membrane 
D)  Both A and B are correct. 
E)  A, B, and C are correct.

Question 17

Viruses known to cause only a limited number of human cancers.

Accepted Answer

A) True 
 B)False

Question 18

Viruses are primarily classified according to their

Accepted Answer

A)  shape. 
B)  size. 
C)  type of nucleic acid. 
D)  number of chromosomes. 
E)  type of life cycle. 
A)  shape. 
B)  size. 
C)  type of nucleic acid. 
D)  number of chromosomes. 
E)  type of life cycle.

Question 19

Compare and contrast the ways in which animal, plant, and bacterial viruses gain entry into their host cells.

Accepted Answer

Because cells have different types of ba

Question 20

Describe the mechanism by which PrP is infectious.

Accepted Answer

The clue to why PrP acts as an infectiou

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

Bacteriophages are released quickly and in large quantities from an infected cell.

The viral genome codes for all the proteins in the viral envelope.

The combination of a virus's protein coat and nucleic acid core is called the .

An icosahedron is a type of capsid.

All of the following statements are true of lambda phage EXCEPT:

The majority of cases of infant diarrhea are caused by what kind of virus?

Why is the synthesis of mRNA a central issue for all viruses? How do different types of viruses achieve this goal?

The broadest classification currently used for all viruses is the

During the intracellular state, a virus exists solely as a

Reverse transcriptase is associated with which of the following?

Which of the following have been the least characterized?

The presence of lysogenic phages can change a harmless bacterium into a pathogen via a process known as .

Why do only some viruses cause cancer?

RNA is viral single- stranded RNA that can act directly as mRNA.

Assembly of new viruses is a process that usually requires a variety of viral and cellular enzymes to direct it.

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

Viruses known to cause only a limited number of human cancers.

Viruses are primarily classified according to their

Compare and contrast the ways in which animal, plant, and bacterial viruses gain entry into their host cells.

Describe the mechanism by which PrP is infectious.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Environmental Microbiology

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