Viruses and Prions Quiz
Preview:
Spikes are glycoproteins that can be found projecting from the viral capsid.
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 that infect bacteria are specifically called ______.
A. viroids
B. bacteriophage
C. prions
D. satellite viruses
Persistent viruses that can reactivate periodically are ______.
A. cytopathic
B. inclusion bodies
C. oncoviruses
D. chronic latent viruses
Infectious naked strands of RNA that affect plants are called ______.
A. viroids
B. virions
C. spikes
D. bacteriophage
Viruses are not filterable.
A. TRUE
B. FALSE
Prophages can be activated into viral replication and enter the lytic cycle.
A. TRUE
B. FALSE
Infectious protein particles are called ______.
A. spikes
B. viroids
C. virions
D. prions
Host cells of viruses include ______.
A. animals
B. plants
C. bacteria
D. all of these
Viruses are the most common cause of acute infections that do not result in hospitalization.
A. TRUE
B. FALSE
Mammalian viruses capable of starting tumors are ______.
A. oncoviruses
B. latent
C. syncytia
D. inclusion bodies
What structures are used by bacteriophages to attach to host cell receptors?
A. nucleic acids
B. tail fibers
C. viral sheaths
D. capsid heads
Viruses exhibit all the following except ______.
A. shape
B. genes
C. ability to infect cells
D. metabolism
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
A fully formed virus that can cause an infection in a host cell is called a virion.
A. TRUE
B. FALSE
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
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
Creutzfeldt-Jacob disease is _______.
A. a spongiform encephalopathy of humans
B. caused by a viroid
C. initiated by an oncogenic virus
D. also called “mad cow disease”
Viruses are used to produce vaccines for prevention of certain viral infections.
A. TRUE
B. FALSE
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