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Viruses

Viruses
The bacterial viruses having head made up of large capsomeres, but no tail is morphologically classified as

B
C
D
A

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Viruses
Reverse transcriptase is a useful enzyme to have when

there are no host cells present
an RNA virus converts its RNA to DNA
nutrients are scarce
spikes are forming in the new virus

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Viruses
Which of the following may affect proteins and nucleic acids, but not viruses?

Denaturation
Enzyme treatment
All of these
Pressure

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Viruses
The size of viruses is usually measured in

nanometers
micrometers
millimeters
centimeters

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Viruses
The envelope of which of the following viruses is derived from the host cell nucleus?

Herpesviruses
Retroviruses
Orthomyxoviruses
Paramyxoviruses

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Viruses
Which of the following disinfectant is effective against viruses?

Hydrogen peroxide
Hypochlorite
All of these
Formaldehyde

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