Question 1

Which of the following RNA virus families include the smallest viral pathogens in animals?

Accepted Answer

A)  Picornaviridae 
B)  Coronaviridae 
C)  Paramyxoviridae 
D)  Arenaviridae 
E)  Rhinoviridae 
A)  Picornaviridae 
B)  Coronaviridae 
C)  Paramyxoviridae 
D)  Arenaviridae 
E)  Rhinoviridae

Question 2

How are HIV virions rendered virulent?

Accepted Answer

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

Question 3

A diagnostic sign of measles are (herpangina/Koplik's spots/macules)in the mouth.

Accepted Answer

The answer of A diagnostic sign of measles are (herpangina/Koplik's...

Question 4

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

Accepted Answer

A)  dengue virus. 
B)  Nipah virus. 
C)  respiratory syncytial virus. 
D)  Eastern encephalitis virus. 
E)  rubella virus. 
A)  dengue virus. 
B)  Nipah virus. 
C)  respiratory syncytial virus. 
D)  Eastern encephalitis virus. 
E)  rubella virus.

Question 5

Which of the following is a family of six-pointed,star-shaped viruses that cause gastrointestinal diseases?

Accepted Answer

A)  Picornaviridae 
B)  Caliciviridae 
C)  Rhabdoviridae 
D)  Coronaviridae 
E)  Filoviridae 
A)  Picornaviridae 
B)  Caliciviridae 
C)  Rhabdoviridae 
D)  Coronaviridae 
E)  Filoviridae

Question 6

Chronic liver disease progressing to cancer can result from infection with the RNA hepatitis (A/B/C)virus.

Accepted Answer

The answer of Chronic liver disease progressing to cancer can...

Question 7

Which of the following viruses is considered a childhood disease,was first identified by a German physician,and is known to cause "three-day measles"?

Accepted Answer

A)  rubella 
B)  roseola 
C)  echovirus 
D)  coxsackie A virus 
E)  rhinovirus 
A)  rubella 
B)  roseola 
C)  echovirus 
D)  coxsackie A virus 
E)  rhinovirus

Question 8

Hepatitis A does not cause chronic liver disease,and complete recovery occurs 99% of the time.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is mismatched?

Accepted Answer

A)  Salk vaccine; requires boosters 
B)  Sabin vaccine; live attenuated vaccine 
C)  Salk vaccine; administered orally 
D)  Sabin vaccine; less stable 
E)  Salk vaccine; inactivated polio vaccine 
A)  Salk vaccine; requires boosters 
B)  Sabin vaccine; live attenuated vaccine 
C)  Salk vaccine; administered orally 
D)  Sabin vaccine; less stable 
E)  Salk vaccine; inactivated polio vaccine

Question 10

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 any...

Question 11

A child has a mild fever and a macular rash primarily on the torso.No lesions are evident in the mouth,and the child has not complained of pain.Which of the following diseases might the child have?

Accepted Answer

A)  hand-foot-and-mouth disease 
B)  three-day measles 
C)  red measles 
D)  dengue fever 
E)  Rocky Mountain spotted fever 
A)  hand-foot-and-mouth disease 
B)  three-day measles 
C)  red measles 
D)  dengue fever 
E)  Rocky Mountain spotted fever

Question 12

Humans may become infected with ________ by inhaling aerosols of dried rodent excrement.

Accepted Answer

A)  influenza virus 
B)  coronaviruses 
C)  hantavirus 
D)  West Nile virus 
E)  Venezuelan encephalitis virus 
A)  influenza virus 
B)  coronaviruses 
C)  hantavirus 
D)  West Nile virus 
E)  Venezuelan encephalitis virus

Question 13

Rubella vaccine is a(n)(attenuated/inactivated/subunit)vaccine and should not be given to pregnant women.

Accepted Answer

The answer of Rubella vaccine is a(n)(attenuated/inactivated/subunit)vaccine and should not...

Question 14

Infants infected with the coxsackie B virus do not develop myocarditis and,therefore,the virus is rarely fatal.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is the most correct description of the function of reverse transcriptase?

Accepted Answer

A)  It synthesizes a DNA strand from an RNA template, degrades the RNA strand, and replaces the RNA with a new DNA strand. 
B)  It synthesizes an RNA strand from an integrated DNA, then synthesizes the complementary strand to produce a double-stranded RNA. 
C)  It synthesizes a DNA from an integrated DNA template, then synthesizes multiple RNA copies of the newly synthesized DNA molecule. 
D)  It synthesizes an RNA strand from an infecting single-strand RNA then synthesizes multiple RNA copies of both strands. 
E)  It synthesizes a DNA strand from an infecting RNA strand, then uses the DNA as a template for synthesis of multiple new RNA strands. 
A)  It synthesizes a DNA strand from an RNA template, degrades the RNA strand, and replaces the RNA with a new DNA strand. 
B)  It synthesizes an RNA strand from an integrated DNA, then synthesizes the complementary strand to produce a double-stranded RNA. 
C)  It synthesizes a DNA from an integrated DNA template, then synthesizes multiple RNA copies of the newly synthesized DNA molecule. 
D)  It synthesizes an RNA strand from an infecting single-strand RNA then synthesizes multiple RNA copies of both strands. 
E)  It synthesizes a DNA strand from an infecting RNA strand, then uses the DNA as a template for synthesis of multiple new RNA strands.

Question 16

Which of the following cells are a major reservoir for and distributor of HIV?

Accepted Answer

A)  helper T cells 
B)  B lymphocytes 
C)  cytotoxic T cells 
D)  infected dendritic cells 
E)  monocytes and macrophages 
A)  helper T cells 
B)  B lymphocytes 
C)  cytotoxic T cells 
D)  infected dendritic cells 
E)  monocytes and macrophages

Question 17

The common childhood illness called "hand-foot-and-mouth disease" because it causes lesions in these areas is caused by

Accepted Answer

A)  an echoviruse. 
B)  a rhinoviruse. 
C)  a strain of coxsackie A virus. 
D)  a strain of coxsackie B virus. 
E)  the rubella virus. 
A)  an echoviruse. 
B)  a rhinoviruse. 
C)  a strain of coxsackie A virus. 
D)  a strain of coxsackie B virus. 
E)  the rubella virus.

Question 18

How do coronaviruses differ from togaviruses?

Accepted Answer

A)  Coronaviruses have an envelope. 
B)  Coronaviruses are RNA viruses. 
C)  Coronaviruses have helical capsids. 
D)  Coronaviruses contain positive RNA. 
E)  Coronaviruses individual capsids can be visualized. 
A)  Coronaviruses have an envelope. 
B)  Coronaviruses are RNA viruses. 
C)  Coronaviruses have helical capsids. 
D)  Coronaviruses contain positive RNA. 
E)  Coronaviruses individual capsids can be visualized.

Question 19

The dengue viruses are spread by (fleas/mosquitoes/ticks).

Accepted Answer

The answer of The dengue viruses are spread by (fleas/mosquitoes/ticks)....

Question 20

Deltavirus (hepatitis D virus)requires co-infection with ________ to produce infectious virions.

Accepted Answer

A)  hepatitis A virus 
B)  hepatitis B virus 
C)  hepatitis C virus 
D)  arenaviruses 
E)  hepatitis E virus 
A)  hepatitis A virus 
B)  hepatitis B virus 
C)  hepatitis C virus 
D)  arenaviruses 
E)  hepatitis E virus

Exam 25: Pathogenic RNA Viruses

Which of the following RNA virus families include the smallest viral pathogens in animals?

How are HIV virions rendered virulent?

A diagnostic sign of measles are (herpangina/Koplik's spots/macules)in the mouth.

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

Which of the following is a family of six-pointed,star-shaped viruses that cause gastrointestinal diseases?

Chronic liver disease progressing to cancer can result from infection with the RNA hepatitis (A/B/C)virus.

Which of the following viruses is considered a childhood disease,was first identified by a German physician,and is known to cause "three-day measles"?

Hepatitis A does not cause chronic liver disease,and complete recovery occurs 99% of the time.

Which of the following is mismatched?

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

A child has a mild fever and a macular rash primarily on the torso.No lesions are evident in the mouth,and the child has not complained of pain.Which of the following diseases might the child have?

Humans may become infected with ________ by inhaling aerosols of dried rodent excrement.

Rubella vaccine is a(n)(attenuated/inactivated/subunit)vaccine and should not be given to pregnant women.

Infants infected with the coxsackie B virus do not develop myocarditis and,therefore,the virus is rarely fatal.

Which of the following is the most correct description of the function of reverse transcriptase?

Which of the following cells are a major reservoir for and distributor of HIV?

The common childhood illness called "hand-foot-and-mouth disease" because it causes lesions in these areas is caused by

How do coronaviruses differ from togaviruses?

The dengue viruses are spread by (fleas/mosquitoes/ticks).

Deltavirus (hepatitis D virus)requires co-infection with ________ to produce infectious virions.

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 Diseases, 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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