CH 13 Quiz
cell lines derived from cancer cells, such as HeLa cells, are called
continuous cell lines
continuous cell lines differ from primary cells lines in that
continuous cell lines can be maintained through an indefinite number of generations
viral RNA is replicated where in the host cell
cytoplasm
which method cannot be used to culture viruses in a laboratory
nutrient agar media
the definition of lysogen is
phage DNA is incorporated into host cell DNA
WOTF is the agent associated with development of neurodegenerative disease in livestock and humans?
prions
what must a viral "adhesin" attach to?
receptor
WOFT stage in viral replication is most likely to damage the host cell?
release of lytic viruses
a virus may contain any of the following except
ribosomes
an example of a latent virus infection is
shingles
The following steps occur during multiplication of retroviruses. What is the fourth step?
synthesis of double stranded DNA
the best treatment for the flu is
tamiflu, if high risk
in the process of making new virions
the host cell provides all raw materials & the virus only provides instructions
Generalized transduction differs from specialized transduction in that generalized transduction:
transfers specific DNA
how effective are flu vaccines?
60%
most RNA viruses carry WOFT enzymes
RNA dependent RNA polymerase
WOFT is NOT used as a criterion to classify viruses?
biochemical tests
how long after getting your flu shot are you protected against the flu?
2 weeks
when is flu season in the western US
October through may
The flu (influenza) is caused by
a virus
WOFT is not an ocogenic virus
human immunodeficiency
In a lysogenic infection, the phage DNA becomes ______ into the host cell's chromosome; at this point the phage DNA is called a(n) ______.
integrated.......prophage
Some viruses, such as human herpesvirus 1, infect a cell without causing symptoms. These are called
latent viruses
