Viruses and Prions Quiz
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Prophages can be activated into viral replication and enter the lytic cycle.
A. TRUE
B. FALSE
Viruses exhibit all the following except ______.
A. shape
B. genes
C. ability to infect cells
D. metabolism
Viruses are the most common cause of acute infections that do not result in hospitalization.
A. TRUE
B. FALSE
A fully formed virus that can cause an infection in a host cell is called a virion.
A. TRUE
B. FALSE
Persistent viruses that can reactivate periodically are ______.
A. cytopathic
B. inclusion bodies
C. oncoviruses
D. chronic latent viruses
Visible, clear, well-defined patches in a monolayer of virus-infected cells in a culture are called ______.
A. colony
B. patch
C. plaque
D. pocks
Infectious protein particles are called ______.
A. spikes
B. viroids
C. virions
D. prions
Mammalian viruses capable of starting tumors are ______.
A. oncoviruses
B. latent
C. syncytia
D. inclusion bodies
Viruses are not filterable.
A. TRUE
B. FALSE
Viruses are used to produce vaccines for prevention of certain viral infections.
A. TRUE
B. FALSE
Diagnosis of viral infections sometimes involves analyzing the patient’s blood for specific _____ that the immune system produces against the virus.
A. antibodies
B. antigens
C. complement proteins
D. glycoproteins
Spikes are glycoproteins that can be found projecting from the viral capsid.
A. TRUE
B. FALSE
A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.
A. egg
B. cell
C. bacteriophage
D. embryo
Viruses mutate, and some viruses have not been discovered.
A. TRUE
B. FALSE
Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.
A. TRUE
B. FALSE