Viruses MCQ Question with Answer

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

Question No : 1
Viruses were discovered by

Stanley

Iwanowiski

Twort

Herelle

Question No : 2
Viruses are defined as

a buch of genomes which are looking for a suitable host for replication

micro-organisms which contains DNA only

smallest micro-organisms causing disease

micro-organisms which contains RNA only

Question No : 3
RNA particles causing symptoms like those of viral diseases is known as

virion

vira

viroid

none of these

Question No : 4
Coliphage mX 174 contains:

double stranded RNA

single stranded DNA

double stranded DNA

single stranded RNA

Question No : 5
Viruses differ from living organisms in that, they

can grow inside a living host

can multiply inside a living host

can undergo mutation inside a living host

are non-cellular

Question No : 6
Virus which attacks E.coli is called

bacteriophage

coliphage

phytophage

zoophage

Question No : 7
Virus is a.............................. stage between living and non-living.

balanced

threshold

transitional

none of these