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Viruses

Viruses
Enveloped viruses have a __________ shape.

complex
helical
roughly spherical
icosahedral

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Viruses
Plant viruses may be cultivated in

tissue culture
whole plants
cultures of separated cells
all of these

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Viruses
The viral nucleocapsid is the combination of

envelope and capsid
capsomere and genome
genome and capsid
capsid and spikes

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Viruses
The yield of phage per bacterium is called the

burst size
none of these
latent size
eclipse size

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Viruses
Reverse transcriptase is a useful enzyme to have when

nutrients are scarce
spikes are forming in the new virus
there are no host cells present
an RNA virus converts its RNA to DNA

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Viruses
The repressor protein, since the cell is resistant to lysis from externally infecting phage, is also called

immunity repressor
operon repressor
none of these
immunity operon

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