Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Bacteriophage

1. Bacteriophages are
a) Bacteria that attacks viruses
b) Viruses that attacks bacteria
c) Free living viruses
d) All of these
2. Bacteriophages were discovered by
a) Twort
b) Iwanowsky
c) Pasteur
d) Temin
3. The genome of Bacteriophages can be
a) DNA only
b) Both DNA and RNA
c) Either DNA or RNA
d) RNA only
4. Which of the following is a bacteriophage?
a) Pox virus
b) Retrovirus
c) TMV
d) M13
5. Which of the following is a single stranded RNA phage?
a) M13
b) G viruses
c) M12
d) T-even phages
6. T4 bacteriophages generally parasitizes
T4 bacteriophage structure
a) Bacillus
b) E.coli
c) Psuedomonas
d) Agrobacterium
7. Bacteriophages undergo replication by
a) Binary fission and fragmentation
b) Lytic cycle and lysogenic cycle
c) Both a and b
d) None of these
8. The order of lytic cycle is
a) Adsorption-injection of genetic material-maturation –biosynthesis-lysis and release
b) Adsorption-injection of genetic material-propahge
c) Adsorption-injection of genetic material- biosynthesis-maturation –lysis and release
d) Adsorption-injection of genetic material-lysis
9. The viral genome integrated to the bacterial genome is called
a) plasmid
b) prophage
c) virion
d) capsid
10. Lysogenic strains are also called as
a) temperate phages
b) avirulant phages
c) both a and b
d) none of these

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Answers
1. b) Viruses that attacks bacteria
2. a) Twort
3. c) Either DNA or RNA
4. d) M13
5. c) M12
6. b) E.coli
7. b) Lytic cycle and lysogenic cycle
8. c) Adsorption-injection of genetic material- biosynthesis-maturation –lysis and release
9. b)prophage
10. c) both a and b
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