VIRUSES FROM ANIMAL AND PLANTS QUIZ

The structural abnormality of cells is termed as

metastasis

hyperplasia

anaplasia

all of these

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The nucleocapsid is covered by an outer membrane like structure called

covering

all of these

membronocapsid

envelope

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The tissue structure deteriorates as the virus multiplies. This deterioration is called

cytopathic effect

none of these

protopathic effect

aneuploidy

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West Nile virus can cause a disease in human beings that may be transmitted from an infected bird to a person by a mosquito. This is an example of

endogenous infection

fomite borne disease

nosocomial infection

arthropod borne disease

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The transcription of the viral nucleic acid into mRNA is not necessary in case of

all of these

RNA viruses

ds DNA viruses

ss DNA viruses

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The reovirus and influenza virus contain

5 different segments of dsRNA and 7 different segments of ssRNA respectively

7 different segments of dsRNA and 5different segments of ssRNA respectively

8 different segments of dsRNA and 10 different segments of ssRNA respectively

10 different segments of dsRNA and 8 different segments of ssRNA respectively

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Viral matrix proteins are

found mainly on naked viruses

anchor the envelope of enveloped viruses

part of the nucleoprotein core of viruses

exposed on the surface of the virus

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Which type of interferon is produced by virus-infected cells?

β

None of these

Both (a) and (b)

α

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The predominant lipid substance found in the viral envelope is

phospholipids

glycolipids

all of these

neutral fat

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Icosahedral viruses are generally

polio viruses

both (a) and (b)

adeno viruses

none of these

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