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Viruses

Viruses
Viruses require __________ for growth.

living cells
plants
bacteria
animals

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Viruses
Viruses can be purified based on their size and density by using

precipitation
gradient centrifugation
differential centrifugation
none of these

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Viruses
The time from infection until lysis is called as

eclipse period
latent period
burst size
rise period

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Viruses
Which of the following bacteriophage is said to have banal symmetry?

T4
T2
T6
all of these

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Viruses
The most popular indirect method of counting virus particles is by

counting plaque-forming units
colony counting
plaque-assay
hemagglutination assay

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Viruses
Which of the following is an example of rod-shaped viruses having their capsomeres arranged helically and not in the stacked ring?

Bateriophage MV-L2
Bateriophage M13
Bateriophage T4
Bateriophage T2

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