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Viruses

Viruses
Enveloped viruses have a __________ shape.

icosahedral
helical
roughly spherical
complex

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Viruses
Which of the following may affect proteins and nucleic acids, but not viruses?

Denaturation
Enzyme treatment
Pressure
All of these

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Viruses
When a virus enters a cell but does not replicate immediately, the situation is called

symbiosis
fermentation
lysogeny
synergism

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Viruses
The infected cells continue to reproduce themselves as well as the virus, and the mature virions are extruded from the cell surface continuously over a long period of time. This type of release mechanism is called a

productive infection
inductive infection
resultant infection
all of these

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Viruses
The time from infection until lysis is called as

burst size
eclipse period
latent period
rise period

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Viruses
The lysogenic state is governed by the activity of the regulatory region of the lambda phage genomes; this region is termed as

none of these
immunity operon
operon repressor
immunity repressor

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