Viruses and Prions Quiz
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Viruses mutate, and some viruses have not been discovered.
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
Viruses are the most common cause of acute infections that do not result in hospitalization.
A. TRUE
B. FALSE
Persistent viruses that can reactivate periodically are ______.
A. cytopathic
B. inclusion bodies
C. oncoviruses
D. chronic latent viruses
Prophages can be activated into viral replication and enter the lytic cycle.
A. TRUE
B. FALSE
Viruses that infect bacteria are specifically called ______.
A. viroids
B. bacteriophage
C. prions
D. satellite viruses
What structures are used by bacteriophages to attach to host cell receptors?
A. nucleic acids
B. tail fibers
C. viral sheaths
D. capsid heads
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
Spikes are glycoproteins that can be found projecting from the viral capsid.
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
Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.
A. TRUE
B. FALSE
Host cells of viruses include ______.
A. animals
B. plants
C. bacteria
D. all of these
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
