VIRUSES FROM ANIMAL AND PLANTS QUIZ

Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms?

Somatic recombination of heavy and light chains

Reassortment of RNA segments from different influenza viruses

Changing the receptor binding canyon that docks with the host receptor

Expression of several different capsule types

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Icosahedral viruses are generally

none of these

polio viruses

both (a) and (b)

adeno viruses

TRUE ANSWER : ?
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The reovirus and influenza virus contain

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

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

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

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

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

β

α

None of these

Both (a) and (b)

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

mRNA

rRNA

None of these

tRNA

TRUE ANSWER : ?
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Interanuclear inclusion bodies are found in cells infected with

Herpesviruses

Parvoviruses

all of these

Adenoviruses

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Fluorescence microscopy can be used for the diagnosis of

Herpes simplex encephalitis

Rabies

All of these

Subacute sclerosing panencephalitis

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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

fomite borne disease

nosocomial infection

arthropod borne disease

endogenous infection

TRUE ANSWER : ?
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Transfer of infection from cell to cell occurs mainly by direct transfer of virions via

none of these

plasmodesmata

protodesmata

cytodesmata

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

none of these

aneuploidy

cytopathic effect

protopathic effect

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YOUR ANSWER : ?

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