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Viruses

Viruses
The most efficient way to enclose a space is within a/an

icosahedron
helix
sphere
cube

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Viruses
Viruses require __________ for growth.

living cells
animals
plants
bacteria

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Viruses
A change from lysogeny to lysis is generally induced by

irradiation
ultraviolet light
chemicals
all of these

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

Pressure
All of these
Denaturation
Enzyme treatment

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Viruses
The phage components begin to assemble into mature phages only after the synthesis of

Both (a) and (b)
amino acids
structural protein
nucleic acid

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Viruses
In the simplest capsid, there is a capsomere at each of the 12 vertices; this capsomere, which is surrounded by five other capsomeres, is termed a

polyhedra
penton
helical
icosahedral

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