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Viruses

Viruses
The size of viruses is usually measured in

centimeters
millimeters
nanometers
micrometers

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Viruses
The envelope of an enveloped virus is derived from

the cell membrane
none of these
the mitochondrion of the cell
the endoplasmic reticulum of the cell

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Viruses
In cell culture, measles virus may lead to

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

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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
lysogeny
spontaneous induction
none of these

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Viruses
Viruses largely lack metabolic machinery of their own to generate energy or to synthesize

carbohydrate
protein
all of these
alcohol

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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

operon repressor
immunity repressor
none of these
immunity operon

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MORE MCQ ON Viruses

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