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15 Cards in this Set

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  • Back
Viruses have all the following except:
A) definite shape
B) metabolism
C) genes
D) ability to infect host cells
E) ultramicroscopic size
metabolism
Host cells of viruses include:
human and other animals
plants and fungi
bacteria
protozoa and algae
The core of every virus particle always contains:
either DNA or RNA
Classification of viruses into families involves determining all the following characteristics except:
A) type of nucleic acid
B) type of capsid
C) presence of an envelope
D) biochemical reactions
E) number of strands in the nucleic acid
type of capsid
Virus capsids are made from subunits called:
capsomeres
Helical and icosahedral are terms used to describe the shapes of a virus:
capsid
These structures are used by bacteriophages to attach to host cell receptors:
A) sheath
B) tail fibers
C) nucleic acid
D) capsid head
E) None of the choices are correct
tail fibers
The correct sequences of events in viral multiplication is:
absorption, penetration, replication, maturation, assembly, release.
Which of the following will not support viral cultivation?
blood agar
Host range is limited by:
type of host cell receptors on cell membrane
All of the following pertain to virus envelopes except:
A) gained as a virus leaves the host cell membrane
B) gained as a virus leaves the nuclear membrane
C) contain special virus proteins
D) help the virus particle attach to host cells
E) located between the capsid and nucleic acid
located between the capsid and nucleic acid
The virus-induced, specific damage to the host cell that can be seen in a light microscope is called:
cytopathic effects
Visible,clear, well-defined patches in a monolayer of virus-infected cells in a culture is called:
plaques
Which of the following is a type of cytopathic effect?
inclusions in the nucleus, mulinucleated giant cells
inclusions in the cytoplasm
cells round up
infectious protein particles are called:
prions