Question 1

In the United States, about 75% of children 7 years old and older have antibodies to astroviruses.

Accepted Answer

A) True 
 B)False

Question 2

An emerging fatal disease in humans caused by one of the members of the Paramyxoviridae is known as

Accepted Answer

A)  Nipahvirus. 
B)  Morbillivirus. 
C)  Rubulavirus. 
D)  respiratory syncytial virus. 
E)  Pneumovirus. 
A)  Nipahvirus. 
B)  Morbillivirus. 
C)  Rubulavirus. 
D)  respiratory syncytial virus. 
E)  Pneumovirus.

Question 3

Lesions of the mouth caused by coxsackie A virus are called (herpangina/herpetic/pleurodynia).

Accepted Answer

The answer of Lesions of the mouth caused by coxsackie...

Question 4

In asthmatic individuals, the "common cold" caused by rhinoviruses can be treated

Accepted Answer

A)  with interferons. 
B)  for symptoms only (antihistamine, decongestant, pain reliever). 
C)  for symptoms or with the prescription antiviral pleconaril. 
D)  with the prescription antiviral pleconaril. 
E)  with the prescription antiviral ribavirin. 
A)  with interferons. 
B)  for symptoms only (antihistamine, decongestant, pain reliever). 
C)  for symptoms or with the prescription antiviral pleconaril. 
D)  with the prescription antiviral pleconaril. 
E)  with the prescription antiviral ribavirin.

Question 5

Coronaviruses and rhinoviruses replicate best in the (cooler/moister/salty) conditions of the nasal cavity.

Accepted Answer

The answer of Coronaviruses and rhinoviruses replicate best in the...

Question 6

The HIV virion is best described as a(n)

Accepted Answer

A)  unsegmented RNA genome in a long flexible helical capsid with envelope. 
B)  segmented RNA genome in an irregular polyhedron capsid with envelope. 
C)  segmented RNA genome in an icosahedral capsid, without envelope. 
D)  unsegmented RNA genome in a helical capsid with an envelope. 
E)  segmented RNA genome in helical capsids and an envelope. 
A)  unsegmented RNA genome in a long flexible helical capsid with envelope. 
B)  segmented RNA genome in an irregular polyhedron capsid with envelope. 
C)  segmented RNA genome in an icosahedral capsid, without envelope. 
D)  unsegmented RNA genome in a helical capsid with an envelope. 
E)  segmented RNA genome in helical capsids and an envelope.

Question 7

HIV attaches to T cell and macrophages by means of an interaction between gp120 and a(n) (antibody/CD4/gp41) receptor.

Accepted Answer

The answer of HIV attaches to T cell and macrophages...

Question 8

Which of the following statements about rhinoviruses is FALSE?

Accepted Answer

A)  They are the only viruses that can cause a common cold. 
B)  They thrive at 33°C. 
C)  They are extremely infectious. 
D)  They are limited to infecting the upper respiratory tract. 
E)  Person- to- person contact is the most common mode of transmission. 
A)  They are the only viruses that can cause a common cold. 
B)  They thrive at 33°C. 
C)  They are extremely infectious. 
D)  They are limited to infecting the upper respiratory tract. 
E)  Person- to- person contact is the most common mode of transmission.

Question 9

Dark staining masses of virions, called Negri bodies, in the brains of victims are diagnostic of

Accepted Answer

A)  Venezuelan encephalitis virus. 
B)  rabies. 
C)  eastern equine encephalitis virus. 
D)  HTLV- 2. 
E)  California encephalitis virus. 
A)  Venezuelan encephalitis virus. 
B)  rabies. 
C)  eastern equine encephalitis virus. 
D)  HTLV- 2. 
E)  California encephalitis virus.

Question 10

Infection with (astrovirus/norovirus/rotavirus) is the most common cause of diarrhea in children worldwide.

Accepted Answer

The answer of Infection with (astrovirus/norovirus/rotavirus) is the most common...

Question 11

How are HIV virions rendered virulent?

Accepted Answer

A)  They contact the cytoplasmic membrane via gp41. 
B)  They bud to the surface of the host cell. 
C)  They use a chemokine receptor to remove gp120. 
D)  The action of protease releases reverse transcriptase and capsomeres after the virion buds from the cell. 
E)  They bind to smooth muscle cells. 
A)  They contact the cytoplasmic membrane via gp41. 
B)  They bud to the surface of the host cell. 
C)  They use a chemokine receptor to remove gp120. 
D)  The action of protease releases reverse transcriptase and capsomeres after the virion buds from the cell. 
E)  They bind to smooth muscle cells.

Question 12

Diseases caused by coxsackie A virus include

Accepted Answer

A)  myocarditis. 
B)  hepatitis. 
C)  hand- foot- and- mouth disease. 
D)  viral meningitis. 
E)  both hand- foot- and- mouth disease and viral meningitis. 
A)  myocarditis. 
B)  hepatitis. 
C)  hand- foot- and- mouth disease. 
D)  viral meningitis. 
E)  both hand- foot- and- mouth disease and viral meningitis.

Question 13

The (reoviruses/retroviruses/rhinoviruses) have been studied more than any other group of viruses because of their unique features and the diseases they cause.

Accepted Answer

The answer of The (reoviruses/retroviruses/rhinoviruses) have been studied more than...

Question 14

The practice of screening blood, blood products, and organ transplants for HIV has virtually eliminated the risk of HIV infection from these sources.

Accepted Answer

A) True 
 B)False

Question 15

The arenaviruses are unique because

Accepted Answer

A)  they undergo rapid antigenic drift and antigenic shift. 
B)  their virions contain reverse transcriptase. 
C)  their virions contain ribosomes. 
D)  they are transmitted by direct contact with the blood of animals. 
E)  they "highjack" the glycoproteins of co- infecting viruses. 
A)  they undergo rapid antigenic drift and antigenic shift. 
B)  their virions contain reverse transcriptase. 
C)  their virions contain ribosomes. 
D)  they are transmitted by direct contact with the blood of animals. 
E)  they "highjack" the glycoproteins of co- infecting viruses.

Exam 25: Pathogenic Rna Viruses

In the United States, about 75% of children 7 years old and older have antibodies to astroviruses.

An emerging fatal disease in humans caused by one of the members of the Paramyxoviridae is known as

Lesions of the mouth caused by coxsackie A virus are called (herpangina/herpetic/pleurodynia).

In asthmatic individuals, the "common cold" caused by rhinoviruses can be treated

Coronaviruses and rhinoviruses replicate best in the (cooler/moister/salty) conditions of the nasal cavity.

The HIV virion is best described as a(n)

HIV attaches to T cell and macrophages by means of an interaction between gp120 and a(n) (antibody/CD4/gp41) receptor.

Which of the following statements about rhinoviruses is FALSE?

Dark staining masses of virions, called Negri bodies, in the brains of victims are diagnostic of

Infection with (astrovirus/norovirus/rotavirus) is the most common cause of diarrhea in children worldwide.

How are HIV virions rendered virulent?

Diseases caused by coxsackie A virus include

The (reoviruses/retroviruses/rhinoviruses) have been studied more than any other group of viruses because of their unique features and the diseases they cause.

The practice of screening blood, blood products, and organ transplants for HIV has virtually eliminated the risk of HIV infection from these sources.

The arenaviruses are unique because

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

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Applied and Environmental Microbiology

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