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4

The virus DNA which is incorporated into bacterial DNA is termed as

A. episome

B. mesosome

C. free DNA

D. T-phage

Correct Answer :

A. episome


Related Questions

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4

Genetic modification brought about by a virus in a bmleria is known as

A. transformation

B. transduction

C. conjugation

D. candidiasis

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4

One of the interesting features of viruses is that they

A. multiply only in the host cytoplasm

B. are made up of proteins only

C. behave as if they were plants

D. occur only inside bacteria

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4

Which of the following is an example of DNA containing plant virus ?

A. Tobacco mosaic virus

B. Potato mosaic virus

C. Cauliflower mosaic virus

D. Tomato mosaic virus

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4

Edward Jenner discovered

A. vaccination against small pox

B. vaccination against chicken pox

C. immunization against small pox

D. immunization against chickcn pox

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4

Viruses are believed to be

A. living organisms

B. non-living organisms

C. a transitional group between living and non-living world

D. living organisms which have lost the power of multiplication

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4

RNA particles causing symptoms like those of viral diseases is known as

A. virion

B. vira

C. viroid

D. none of these

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4

Where is the protein for protein coat of virus synthesized ?

A. RNA of the virus

B. DNA of the virus

C. RNA of the host

D. Ribosome of the host

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4

Little leaf disease of brinjal is caused by

A. viruses

B. bacteria

C. fungi

D. none of these

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4

Which of the following is a Capsid ?

A. Protein part of virus

B. Nucleic part of virus

C. Both (a) and (b)

D. None of these

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4

The virus DNA which is incorporated into bacterial DNA is termed as

A. episome

B. mesosome

C. free DNA

D. T-phage

What is the correct answer?

4

Which of the following phenomenon is absent in virus ?

A. Replication

B. Mutation

C. Production of energy

D. Growth

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4

Coliphage mX 174 contains:

A. double stranded RNA

B. single stranded DNA

C. double stranded DNA

D. single stranded RNA

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4

Virus is a.............................. stage between living and non-living.

A. balanced

B. threshold

C. transitional

D. none of these

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4

Which of the following is a viral disease of potato ?

A. Early blight of potato

B. Late blight of potato

C. Leaf roll of potato

D. None of these

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4

A clear /.one lot uwhI in bacterial < olon due to viral action is railed

A. plaque

B. phnge

C. streak

D. krnn/

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4

An antiviral substance produced by many vertebrates in response to viral In. fection for resisting the multiplication of viruses is known as

A. antivirin

B. antigen

C. virion

D. interferon

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4

One of the following discovered synthesis of DNA from RNA in Roux Sarcoma Virus

A. Smith

B. Temin

C. Twort

D. Mayer

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4

Virus was crystallized and isolated first by

A. D. Iwanowski

B. F.C. Bawden

C. W.M. Stanley

D. K.M.Smith

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4

Transduction was discovered by

A. Safferman and Morris

B. Lederberg and Zinder

C. Smithv and Knight

D. None of these

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4

Viral DNA incorporated in host DNA is known as

A. prophage

B. vegephaege

C. cyanophage

D. phycophage

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4

Dahlia mosaic virus contains

A. DNA

B. RNA

C. DNA and RNA

D. None of these

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4

A virus contains

A. an outer protein coat and a central core of DNA or RNA

B. outer RNA or DNA and a central core of proteins

C. only nucleic acids

D. only protein coats

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4

Rabies is caused by

A. viruses

B. slimemoulds

C. fungi

D. bacterium

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4

The disease in man caused by viruses is

A. mumps

B. cholera

C. typhoid

D. plague

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4

A stage in the replication of virus, when the cell wall of host is ruptured is known as

A. lesion

B. lysis

C. autolysis

D. haemolysis

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4

The term 'Virus' has been derived from a Latin word meaning

A. poison

B. secretion

C. cell

D. venom

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4

An extreme example of latency in which the DNA of the phage is integrated with the DNA of host cell chromosome is

A. lysis

B. lysogeny

C. prophage

D. attenuated virus

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4

The exception to the cell theory of Schleiden and Schwann are

A. viruses

B. bacteria

C. algae

D. fungi

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4

Roux Sarcoma virus contains

A. RNA

B. DNA

C. DNA and RNA

D. none of these

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4

Viruses were discovered by

A. Stanley

B. Iwanowiski

C. Twort

D. Herelle