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Viruses MCQ Question with Answer

Viruses MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 29
An extreme example of latency in which the DNA of the phage is integrated with the DNA of host cell chromosome is

lysis
lysogeny
prophage
attenuated virus

Question No : 30
One of the interesting features of viruses is that they

multiply only in the host cytoplasm
are made up of proteins only
behave as if they were plants
occur only inside bacteria

Question No : 31
One of the following discovered synthesis of DNA from RNA in Roux Sarcoma Virus

Smith
Temin
Twort
Mayer

Question No : 32
A bacteriophage and a yeast cell are similar in that, both

are colourless
have enzymes
have nucleic acids
none of these

Question No : 33
Transduction was discovered by

Safferman and Morris
Lederberg and Zinder
Smithv and Knight
None of these

Question No : 34
Viral DNA incorporated in host DNA is known as

prophage
vegephaege
cyanophage
phycophage

Question No : 35
Most of the antibiotics have no effect on viruses as

they kill all bacteria which form host of viruses
viruses have no metabolism of their own
viruses form endospores
viruses are too small in size

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