MULTIPLE CHOICE QUESTIONS

1. MICROBIAL GENETICS MCQ
PART - 1
1.Virusthat infectsthe bacterial speciesiscalled
(a)Prophage (b)Bacteriophage
(c)Hostgenome (d)Virulentphage
2.Phage DNA integratedwithbacterial genome iscalled
(a)Bacteriophage (b)Prophage
(c)Hostgenome (d)Virulentphage
3.A bacteriumcontainingacomplete setof phage genesiscalled
(a)Lysogen (b)Integration
(c)Lytic (d)Temperatephage
4.The processinwhicha lysogencaninitiate alyticcycle iscalled
(a)Immunity (b)Phage
(c)Prophage (d)Induction
5.The resistance of alambdalysogentoinfectionbylambdaiscalled
(a)Immunity (b)Induction
(c)Lysogen (d)Integration
6.Phage whichcan produce particlescontainingonlybacterial DNA is
(a)Specializedtransducingphage (b)Generalizedtransducingphage
(c)Virulentphage (d)Temperatephage
7.Low level nutritionalstatusisin
(a)Lysogeniccycle (b)Lyticcycle
(c)Immunity (d)Induction
8.what preventthe formationof rollingcircle fromthe thetareplication?
(a)Gamgene (b)Croregion
(c)CIregion (d)RecB,C
9.Multiplicityof infectionistomeasure
(a)Virus (b)Bacteria
(c)Algae (d)Protozoa
10.Theta mode go to the rollingcircle model bythe presence of

2. (a)RecB,C (b)Gamgene
(c)CIregion (d)Croregion
PART - 2
1.A processbywhichthe bacterial uptake DNA fromthe environmentis
(a)Transduction (b)Conjugation
(c)Transformation (d)Transposons
2.Transferof geneticmaterial fromone bacteriumtoanotherbydirectcell contactis
(a)Transduction (b)Conjugation
(c)Transformation (d)Transposons
3. whichisanotherwayto make holesinbacterial cells?
(a)Electroporation (b)Heatshock
(c)Chillingcells (d)Freezing
4. The processby whichDNA is transferredfromone bacteriumtoanotherbya virus is
(a)Transduction (b)Conjugation
(c)Transformation (d)Transposons
5. Bacterial strainhavingF factor is
(a)F1
(b) F+
(c)F-
(d)Hfr
6. Bacterial strainthat have F factor integratingwithitschromosomal DNA is
(a)F1
(b) F+
(c)F-
(d)Hfr
7. A circular piece of DNA that can replicate independentlyof the bacterial chromosomeorintegrate
and replicate aspart of the chromosome byhomologousrecombinationis
(a)Episome (b)Rollingcircle
(c)Thetamode (d)Hfr
8. Partiallydiploidbacterial celliscalled
(a)Diploid (b)Merozygote
(c)Haploid (d)Episome
9.Jumpingelementsthatmove aroundthe whole chromosome is
(a)Transduction (b)Conjugation

3. (c)Transformation (d)Transposons
10.Which transposonscombine the qualitiesof bothISelements and composite transposons?
(a)Non-composite transposons (b)Retrotransposons
(c)Transposons (d)Conjugative transposons
REFERENCE:
 David Freifelder, Textbook of Molecular Biology, Second Edition.