Viruses and Prions Quiz
Preview:
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 are the most common cause of acute infections that do not result in hospitalization.
A. TRUE
B. FALSE
Infectious naked strands of RNA that affect plants are called ______.
A. viroids
B. virions
C. spikes
D. bacteriophage
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 considered ultramicroscopic because they range in size from 2 mm to 450 mm.
A. TRUE
B. FALSE
Mammalian viruses capable of starting tumors are ______.
A. oncoviruses
B. latent
C. syncytia
D. inclusion bodies
Persistent viruses that can reactivate periodically are ______.
A. cytopathic
B. inclusion bodies
C. oncoviruses
D. chronic latent viruses
Infectious protein particles are called ______.
A. spikes
B. viroids
C. virions
D. prions
Viruses mutate, and some viruses have not been discovered.
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
A fully formed virus that can cause an infection in a host cell is called a virion.
A. TRUE
B. FALSE
Host cells of viruses include ______.
A. animals
B. plants
C. bacteria
D. all of these
Viruses exhibit all the following except ______.
A. shape
B. genes
C. ability to infect cells
D. metabolism
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
Viruses are used to produce vaccines for prevention of certain viral infections.
A. TRUE
B. FALSE
Prophages can be activated into viral replication and enter the lytic cycle.
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 are not filterable.
A. TRUE
B. FALSE
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.