Question # 1

Crystallization of viruses was done by _____ for the first time

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Ivanowsky

Twort

Stanley

Robert Koch

Herpes type-1 virus causes

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Pitted scars

Swollen neck

Rashes on genitals

Vascular lesions

An isolated virus is not considered living, since it

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Separates into two inert parts

Cannot metabolize

Rapidly loses its genome

It coated with an air tight shield

Viruses containing RNA rather than DNA are called

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Riboviruses

Bacteriophages

Rotaviruses

Retroviruses

DNA of non-virulent phage is

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Provirus

Prophage

Both

None

They are Tumor causing viruses and are usually host specific

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Polio viruses

Retroviruses

Oncoviruses

Both b and c

Genome of the acellular particle mainly comprised of

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Protein

Sugars

Lipid

Nucleic acid

If you are studying the structure of HIV , you will observe spikes associated with the

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Core

Capsid

Envelope

Genome

Mad cow infection is caused by ____

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Viroid

Virion

Prion

Bacteria

Which of the following disease is not caused by virus?

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Cholera

Hepatitis

Influenza

Polio

Which of the following virus is DNA enveloped

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Polio virus

Hepatitis B virus

HIV

Measles virus

The smallest known virus is

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HIV virus

HBV virus

Influenza virus

Polio virus

In lytic cycle, the relationship between bacterium and bacteriophages is

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Symbiotic

Master-slave

Husband wife

Host-guest

In HIV infection cycle, uncoating of virus takes place

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Outside the T-cell

Inside the cytoplasm of T-cell

Inside the nucleus of T-cell

Inside the mitochondria of T-cell

Provirus is

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Genome of bacteriophage

Genome of HIV uncoiled in Host cell

Genome of HIV incorporated in Host genome

Genome of a host

Which type of hepatitis leads to chronic liver disease?

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Hepatitis D

Hepatitis A

Hepatitis B

Hepatitis C

Pick up the false statement regarding HIV

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Lipoprotein envelope

Two RNA molecules

Two molecules of RT enzyme

Round shaped capsid

The phage is called temperate when it causes

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Virulence

Lysis

Lysogeny

Bursting of host cell

Which of the following acts as template strand for reverse transcription

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Viral DNA

Viral RNA

Host DNA

Host RNA

Viruses are not resistant to

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Interferons

Penicillin

Streptomycin

Any antibiotic

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