VIRUSES FROM ANIMAL AND PLANTS QUIZ

Transfer of infection from cell to cell occurs mainly by direct transfer of virions via

protodesmata

plasmodesmata

cytodesmata

none of these

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The nucleocapsid is covered by an outer membrane like structure called

membronocapsid

covering

all of these

envelope

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Animal viruses with capsids displaying helical symmetry include

measles and mumps

all of these

influenza

rabies

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Fluorescence microscopy can be used for the diagnosis of

Rabies

Subacute sclerosing panencephalitis

All of these

Herpes simplex encephalitis

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Which of the following reflects the correct order of events that take place during the multiplication of a virus?

Attachment, penetration, biosynthesis, maturation, release

Attachment, penetration, maturation, biosynthesis, release

Attachment, release, biosynthesis, maturation, penetration

Penetration, attachment, biosynthesis, maturation, release

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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

arthropod borne disease

fomite borne disease

nosocomial infection

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Viral matrix proteins are

found mainly on naked viruses

exposed on the surface of the virus

part of the nucleoprotein core of viruses

anchor the envelope of enveloped viruses

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Negri bodies are found in cells infected with

Paramyxoviruses

Rabies virus

Vaccinia virus

Fowlpox virus

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

aneuploidy

protopathic effect

none of these

cytopathic effect

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What does the positive strand in double stranded RNA viruses stands for?

tRNA

None of these

mRNA

rRNA

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