Question # 1

Viruses containing RNA rather than DNA are called

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Riboviruses

Bacteriophages

Rotaviruses

Retroviruses

It is not a symptom of AIDS

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Swollen lymph nodes

Loss of immunity

Swollen neck

Pneumonia

The phage is called temperate when it causes

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Virulence

Lysis

Lysogeny

Bursting of host cell

The particles which do not contain any nucleic acid are

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Viruses

Prions

Viroids

All

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

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

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

Genome of the acellular particle mainly comprised of

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Protein

Sugars

Lipid

Nucleic acid

Viral core always contain __ among the following

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DNA

RNA

Both A and B

Any of A or B

Isosahedral viruses usually have ___

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10 faces

20 faces

15 faces

5 faces

Which of the following is a living character of virus

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Formation of Crystals

Production of new viral particles

Coordination

Metabolism

Newly synthesized Large proteins are digested into small viral proteins by

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Host protease

Viral protease

Viral RT

Host pepsin

The persistent symptoms of small pox are

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Raised fluid filled vesicles

The pocks

Pustules

Vascular lesions

In life cycle of bacteriophage, ______ occurs followed by_______.

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Assembly. Penetration

Multiplication, landing

Tail contractio, Penetration

Penetration, Assembly

Mad cow infection is caused by ____

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Viroid

Virion

Prion

Bacteria

Which is irrelevant?

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Genome to virus structure

Capsomeres to Capsid

Tumors to retroviruses

Envelope to all viruses

Herpes type-1 virus causes

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Pitted scars

Swollen neck

Rashes on genitals

Vascular lesions

Virus without envelope is

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HIV

Hepatitis B

Polio virus

Hepatatis C

Choose the correct option about the following figure:

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A is showing Envelope

B is not showing envelope

C is showing RT

D is showing RNA

Viruses are not resistant to

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Interferons

Penicillin

Streptomycin

Any antibiotic

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

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