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Viruses

Viruses
Viruses require __________ for growth.

bacteria
animals
plants
living cells

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Viruses
Lesions on chorioallantoic membrane are produced by

all of these
Herpes simplex virus
Herpes B virus
Vaccinia virus

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Viruses
In cell culture, measles virus may lead to

transformation of cells
rounding and aggregation of cells
syncytium formation
nuclear pyknosis

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Viruses
Bacteriophages have been used widely in genetic research, since they are the smallest and simplest biological entities capable of

self-replication
self-duplication
multiplication
duplication

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Viruses
The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in

lytic phase
spontaneous induction
lysogeny
none of these

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Viruses
Which of the following disinfectant is effective against viruses?

Formaldehyde
Hydrogen peroxide
All of these
Hypochlorite

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