Question 1

The HIV virion is best described as a(n)

Accepted Answer

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

Question 2

The type of polio that involves the infection of the brain stem and medulla is

Accepted Answer

A)  asymptomatic polio. 
B)  postpolio syndrome. 
C)  bulbar poliomyelitis. 
D)  minor polio. 
E)  nonparalytic polio. 
A)  asymptomatic polio. 
B)  postpolio syndrome. 
C)  bulbar poliomyelitis. 
D)  minor polio. 
E)  nonparalytic polio.

Question 3

Which of the following viruses is suspected of being a cause of diabetes mellitus?

Accepted Answer

A)  coxsackie A virus 
B)  coxsackie B virus 
C)  echoviruses 
D)  enteroviruses 
E)  hepatitis A 
A)  coxsackie A virus 
B)  coxsackie B virus 
C)  echoviruses 
D)  enteroviruses 
E)  hepatitis A

Question 4

The West Nile virus is classified as a(n)

Accepted Answer

A)  rhinovirus. 
B)  coronavirus. 
C)  togavirus. 
D)  flavivirus. 
E)  enterovirus. 
A)  rhinovirus. 
B)  coronavirus. 
C)  togavirus. 
D)  flavivirus. 
E)  enterovirus.

Question 5

Norovirus is the leading cause of viral gastroenteritis in the United States.

Accepted Answer

A) True 
 B)False

Question 6

Ebola and Marburg viruses are emerging pathogens that cause life-threatening (encephalitis/diarrhea/hemorrhaging)and can be transmitted in body fluids.

Accepted Answer

The answer of Ebola and Marburg viruses are emerging pathogens...

Question 7

Colorado tick fever is caused by a ________ and can cause headache,muscle aches and conjunctivitis in some individuals.

Accepted Answer

A)  coltivirus 
B)  rotavirus 
C)  mumps virus 
D)  hantavirus 
E)  coxsackie B virus 
A)  coltivirus 
B)  rotavirus 
C)  mumps virus 
D)  hantavirus 
E)  coxsackie B virus

Question 8

Which of the following cells is NOT infected by HIV?

Accepted Answer

A)  helper T cells 
B)  microglia 
C)  B lymphocytes 
D)  macrophages 
E)  dendritic cells 
A)  helper T cells 
B)  microglia 
C)  B lymphocytes 
D)  macrophages 
E)  dendritic cells

Question 9

A distinctive characteristic of rotavirus virions is the presence of (dsRNA/-ssRNA/segemented RNA).

Accepted Answer

The answer of A distinctive characteristic of rotavirus virions is...

Question 10

Which of the following is a family of double-stranded RNA viruses?

Accepted Answer

A)  Picornaviridae 
B)  Coronaviridae 
C)  Retroviridae 
D)  Reoviridae 
E)  Rhabdoviridae 
A)  Picornaviridae 
B)  Coronaviridae 
C)  Retroviridae 
D)  Reoviridae 
E)  Rhabdoviridae

Question 11

An RNA that can be used by a ribosome to translate into protein is (double/positive/negative)strand RNA.

Accepted Answer

The answer of An RNA that can be used by...

Question 12

Enteric hepatitis is fatal for 20% of people in which of the following groups?

Accepted Answer

A)  infants under the age of 1 year 
B)  teenagers 
C)  young adults 
D)  pregnant women 
E)  elderly men 
A)  infants under the age of 1 year 
B)  teenagers 
C)  young adults 
D)  pregnant women 
E)  elderly men

Question 13

Why are patients at risk for serious respiratory complications vaccinated every year for influenza?

Accepted Answer

Influenza is caused by two species of or

Question 14

Fever,jaundice,and hemorrhaging which often results in "black vomit" are characteristics of

Accepted Answer

A)  coronavirus. 
B)  Dengue fever. 
C)  hepatitis C infection. 
D)  West Nile fever. 
E)  yellow fever. 
A)  coronavirus. 
B)  Dengue fever. 
C)  hepatitis C infection. 
D)  West Nile fever. 
E)  yellow fever.

Question 15

The spread of hepatitis D is preventable by the hepatitis D vaccine.

Accepted Answer

A) True 
 B)False

Question 16

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 17

Which of the following bodily fluids is commonly a source of infection by HIV?

Accepted Answer

A)  breast milk 
B)  semen 
C)  vaginal secretions 
D)  both semen and vaginal secretions 
E)  breast milk, semen, and vaginal secretions 
A)  breast milk 
B)  semen 
C)  vaginal secretions 
D)  both semen and vaginal secretions 
E)  breast milk, semen, and vaginal secretions

Question 18

Fever,fatigue,loss of appetite,and a yellow color of the sclera and skin,without hemorrhaging or kidney damage,are typically observed with

Accepted Answer

A)  gastroenteritis. 
B)  dengue fever. 
C)  hepatitis. 
D)  rubella. 
E)  yellow fever. 
A)  gastroenteritis. 
B)  dengue fever. 
C)  hepatitis. 
D)  rubella. 
E)  yellow fever.

Question 19

Infection by all influenza strains can be prevented with vaccines.

Accepted Answer

A) True 
 B)False

Question 20

The transmission of enteric hepatitis is most effectively prevented by

Accepted Answer

A)  safe sex practices. 
B)  immunization. 
C)  reducing aerosol dispersion. 
D)  vector control. 
E)  good public sanitation and personal hygiene. 
A)  safe sex practices. 
B)  immunization. 
C)  reducing aerosol dispersion. 
D)  vector control. 
E)  good public sanitation and personal hygiene.

Exam 25: Pathogenic RNA Viruses

The HIV virion is best described as a(n)

The type of polio that involves the infection of the brain stem and medulla is

Which of the following viruses is suspected of being a cause of diabetes mellitus?

The West Nile virus is classified as a(n)

Norovirus is the leading cause of viral gastroenteritis in the United States.

Ebola and Marburg viruses are emerging pathogens that cause life-threatening (encephalitis/diarrhea/hemorrhaging)and can be transmitted in body fluids.

Colorado tick fever is caused by a ________ and can cause headache,muscle aches and conjunctivitis in some individuals.

Which of the following cells is NOT infected by HIV?

A distinctive characteristic of rotavirus virions is the presence of (dsRNA/-ssRNA/segemented RNA).

Which of the following is a family of double-stranded RNA viruses?

An RNA that can be used by a ribosome to translate into protein is (double/positive/negative)strand RNA.

Enteric hepatitis is fatal for 20% of people in which of the following groups?

Why are patients at risk for serious respiratory complications vaccinated every year for influenza?

Fever,jaundice,and hemorrhaging which often results in "black vomit" are characteristics of

The spread of hepatitis D is preventable by the hepatitis D vaccine.

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

Which of the following bodily fluids is commonly a source of infection by HIV?

Fever,fatigue,loss of appetite,and a yellow color of the sclera and skin,without hemorrhaging or kidney damage,are typically observed with

Infection by all influenza strains can be prevented with vaccines.

The transmission of enteric hepatitis is most effectively prevented by

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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