Question # 1

Viruses reproduce through a process

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Binary fission

Replication

Both a and b

Transformation

Example of a virus having tadpole shape consisted of head and tail

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Bacteriophage

Polio virus

HIV

HV

Which of the following virus is DNA enveloped

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Polio virus

Hepatitis B virus

HIV

Measles virus

HIV attaches on cell membrane of T cell at _____ receptor site

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Cd2

Cd4

Cd8

Gp120

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

Retroviruses cause tumors in

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Rodents

Fowls

Cats

All

Pick up the false statement regarding HIV

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Lipoprotein envelope

Two RNA molecules

Two molecules of RT enzyme

Round shaped capsid

Crystallization of viruses was done by _____ for the first time

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Ivanowsky

Twort

Stanley

Robert Koch

Which of the following is a common feature of all viruses

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DNA replication in cytoplasm

RNA synthesis in nucleus

Protein synthesis in cytoplasm

Reverse transcription in cytoplasm

Major cells infected by HIV are

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Monocytes

B lymphocytes

T lymphocytes

RBC

Which is irrelevant?

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Genome to virus structure

Capsomeres to Capsid

Tumors to retroviruses

Envelope to all viruses

The smallest known virus is

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HIV virus

HBV virus

Influenza virus

Polio virus

Causative agent of mysterious brain infection is composed of

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DNA+Protein

RNA+Protein

RNA only

Protein only

The particles which do not contain any nucleic acid are

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Viruses

Prions

Viroids

All

Newly synthesized Large proteins are digested into small viral proteins by

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Host protease

Viral protease

Viral RT

Host pepsin

The best known phages are T phages that infect

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Pseudomonas

Mycoplasma

Escherichia Coli

Salmonella

In lytic cycle, the relationship between bacterium and bacteriophages is

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Symbiotic

Master-slave

Husband wife

Host-guest

DNA of non-virulent phage is

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Provirus

Prophage

Both

None

The phage is called temperate when it causes

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Virulence

Lysis

Lysogeny

Bursting of host cell

Which of the following disease is not caused by virus?

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Cholera

Hepatitis

Influenza

Polio

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