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Chapter 13: Viruses, Viroids, and Prions
Viral
Characteristics
Viral
Cultivation
Viral
Infections
Viruses and
Cancer
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Prions/Viroids
FINAL ROUND
© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$100 Question
Viruses differ from bacteria in that viruses
a. do not have any nucleic acid.
b. are obligate intracellular parasites.
c. are filterable.
d. are not composed of cells.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$100 Answer
Viruses differ from bacteria in that viruses
a. do not have any nucleic acid.
b. are obligate intracellular parasites.
c. are filterable.
d. are not composed of cells.
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$200 Question
Which of the following statements about spikes
is FALSE?
a. They are used for absorption.
b. They are used for nucleic acid replication.
c. They are found only on enveloped viruses.
d. They may cause hemagglutination.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$200 Answer
Which of the following statements about spikes
is FALSE?
a. They are used for absorption.
b. They are used for nucleic acid replication.
c. They are found only on enveloped viruses.
d. They may cause hemagglutination.
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$300 Question
Viruses that infect bacteria are called
a. bacteriophages.
b. prions.
c. viroids.
d. complex viruses.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$300 Answer
Viruses that infect bacteria are called
a. bacteriophages.
b. prions.
c. viroids.
d. complex viruses.
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Topic 1: Viral Characteristics
$400 Question
Viruses range in size from
a. 10 to 100 nm in length.
b. 10 to 1000 nm in length.
c. 20 to 100 nm in length.
d. 20 to 1000 nm in length.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$400 Answer
Viruses range in size from
a. 10 to 100 nm in length.
b. 10 to 1000 nm in length.
c. 20 to 100 nm in length.
d. 20 to 1000 nm in length.
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$500 Question
Which of the following is NOT used as a criterion
to classify viruses?
a. biochemical tests
b. size
c. morphology
d. number of capsomeres
ANSWER
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© 2013 Pearson Education, Inc.
Topic 1: Viral Characteristics
$500 Answer
Which of the following is NOT used as a criterion
to classify viruses?
a. biochemical tests
b. size
c. morphology
d. number of capsomeres
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$100 Question
What is the most common method used to
identify viruses?
a. serological methods
b. observation of cytopathic effects
c. PCR
d. morphology
ANSWER
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$100 Answer
What is the most common method used to
identify viruses?
a. serological methods
b. observation of cytopathic effects
c. PCR
d. morphology
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$200 Question
Viruses CANNOT be cultured in
a. laboratory animals.
b. cell culture.
c. embryonated eggs.
d. culture media.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$200 Answer
Viruses CANNOT be cultured in
a. laboratory animals.
b. cell culture.
c. embryonated eggs.
d. culture media.
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Topic 2: Viral Cultivation
$300 Question
What is cell deterioration due to viral infections
termed?
a. transformation
b. transduction
c. cytopathic effect
d. plaques
ANSWER
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Topic 2: Viral Cultivation
$300 Answer
What is cell deterioration due to viral infections
termed?
a. transformation
b. transduction
c. cytopathic effect
d. plaques
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Topic 2: Viral Cultivation
$400 Question
Continuous cell lines are
a. transduced cells.
b. cancerous cells.
c. developed from human embryos.
d. derived from tissue slices.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$400 Answer
Continuous cell lines are
a. transduced cells.
b. cancerous cells.
c. developed from human embryos.
d. derived from tissue slices.
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Topic 2: Viral Cultivation
$500 Question
A plaque is theoretically formed by
a. a single virus.
b. viruses infecting primary cell lines.
c. viruses injected into the yolk sac.
d. viruses injected into the amniotic cavity.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 2: Viral Cultivation
$500 Answer
A plaque is theoretically formed by
a. a single virus.
b. viruses infecting primary cell lines.
c. viruses injected into the yolk sac.
d. viruses injected into the amniotic cavity.
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$100 Question
Which of the following is an example of a
persistent viral infection in humans?
a. cold sores
b. cervical cancer
c. shingles
d. leukemia
ANSWER
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$100 Answer
Which of the following is an example of a
persistent viral infection in humans?
a. cold sores
b. cervical cancer
c. shingles
d. leukemia
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$200 Question
Which of the following is an example of a latent
viral infection in humans?
a. smallpox
b. polio
c. shingles
d. mumps
ANSWER
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$200 Answer
Which of the following is an example of a latent
viral infection in humans?
a. smallpox
b. polio
c. shingles
d. mumps
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$300 Question
How is a persistent viral infection different from
a latent viral infection?
a. It remains in equilibrium with the host.
b. It can be reactivated by immunosuppression.
c. The infectious virus appears suddenly.
d. The infectious virus gradually builds up over
a long period of time.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$300 Answer
How is a persistent viral infection different from
a latent viral infection?
a. It remains in equilibrium with the host.
b. It can be reactivated by immunosuppression.
c. The infectious virus appears suddenly.
d. The infectious virus gradually builds up
over a long period of time.
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$400 Question
What is the primary effect of HTLV-1?
a. decreased CD4+ T cells
b. rapid mental deterioration
c. increased white blood cell growth
d. skin and mucous membrane lesions
ANSWER
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$400 Answer
What is the primary effect of HTLV-1?
a. decreased CD4+ T cells
b. rapid mental deterioration
c. increased white blood cell growth
d. skin and mucous membrane lesions
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$500 Question
SSPE is a type of _____ infection and is caused
by the _____ virus.
a. latent; herpes simplex virus
b. latent; echovirus
c. persistent; measles
d. persistent; rubella
ANSWER
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© 2013 Pearson Education, Inc.
Topic 3: Viral Infections
$500 Answer
SSPE is a type of _____ infection and is caused
by the _____ virus.
a. latent; herpes simplex virus
b. latent; echovirus
c. persistent; measles
d. persistent; rubella
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$100 Question
Cancer-causing alterations to cellular DNA affect
parts of the genome called
a. introns.
b. oncogenes.
c. exons.
d. sense strand.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$100 Answer
Cancer-causing alterations to cellular DNA affect
parts of the genome called
a. introns.
b. oncogenes.
c. exons.
d. sense strand.
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$200 Question
Sarcoma is a cancer of _____ tissue.
a. nervous
b. epithelial
c. muscular
d. connective
ANSWER
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$200 Answer
Sarcoma is a cancer of _____ tissue.
a. nervous
b. epithelial
c. muscular
d. connective
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Topic 4: Viruses and Cancer
$300 Question
Which of the following viruses have reverse
transcriptase?
a. Hepadnaviridae and Retroviridae
b. bacteriophage families
c. Herpesviridae and Retroviridae
d. Retroviridae and Picornaviridae
ANSWER
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$300 Answer
Which of the following viruses have reverse
transcriptase?
a. Hepadnaviridae and Retroviridae
b. bacteriophage families
c. Herpesviridae and Retroviridae
d. Retroviridae and Picornaviridae
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Topic 4: Viruses and Cancer
$400 Question
Which of the following is NOT an effect of
transformation?
a.
b.
c.
d.
T antigens appear in the nucleus of the cell.
Cells lose their ability to divide.
Cells tend to exhibit chromosomal abnormalities.
Tumor-specific transplantation antigens appear
on the cell.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$400 Answer
Which of the following is NOT an effect of
transformation?
a.
b.
c.
d.
T antigens appear in the nucleus of the cell.
Cells lose their ability to divide.
Cells tend to exhibit chromosomal abnormalities.
Tumor-specific transplantation antigens appear
on the cell.
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$500 Question
After being transformed by viruses, what do many
tumor cells contain on their cell surface?
a. TSTA
b. PrP
c. PFU
d. ICTV
ANSWER
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© 2013 Pearson Education, Inc.
Topic 4: Viruses and Cancer
$500 Answer
After being transformed by viruses, what do many
tumor cells contain on their cell surface?
a. TSTA
b. PrP
c. PFU
d. ICTV
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$100 Question
A viroid is a
a. provirus.
b. naked, infectious piece of RNA.
c. capsid without a nucleic acid.
d. complete, infectious virus particle.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$100 Answer
A viroid is a
a. provirus.
b. naked, infectious piece of RNA.
c. capsid without a nucleic acid.
d. complete, infectious virus particle.
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Topic 5: Prions/Viroids
$200 Question
Viroids infect
a. animals.
b. insects.
c. plants.
d. bacteria.
ANSWER
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Topic 5: Prions/Viroids
$200 Answer
Viroids infect
a. animals.
b. insects.
c. plants.
d. bacteria.
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Topic 5: Prions/Viroids
$300 Question
Scrapie is an example of an infection caused by a
a. prion.
b. viroid.
c. difficult-to-detect virus.
d. difficult-to-grow bacterium.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$300 Answer
Scrapie is an example of an infection caused by a
a. prion.
b. viroid.
c. difficult-to-detect virus.
d. difficult-to-grow bacterium.
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$400 Question
One human disease caused by a prion is
a. mad cow disease.
b. Creutzfeldt-Jakob disease.
c. scrapie.
d. tularemia.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$400 Answer
One human disease caused by a prion is
a. mad cow disease.
b. Creutzfeldt-Jakob disease.
c. scrapie.
d. tularemia.
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$500 Question
It is hypothesized that viroids evolved from
a. viruses.
b. exons.
c. introns.
d. prions.
ANSWER
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© 2013 Pearson Education, Inc.
Topic 5: Prions/Viroids
$500 Answer
It is hypothesized that viroids evolved from
a. viruses.
b. exons.
c. introns.
d. prions.
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FINAL ROUND Question
Which type of viral nucleic acid functions as
mRNA?
a. RNA, double-stranded
b. RNA, – strand
c. RNA, + strand
d. RNA, reverse transcriptase
ANSWER
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© 2013 Pearson Education, Inc.
FINAL ROUND Answer
Which type of viral nucleic acid functions as
mRNA?
a. RNA, double-stranded
b. RNA, – strand
c. RNA, + strand
d. RNA, reverse transcriptase
BACK TO GAME
© 2013 Pearson Education, Inc.