UNIVERSITY OFTHEPUNJAB e
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UNIVERSITY OF THE PUNJAB Seventh Semester - 2019 Examination: B.S. 4 Years Program , " e " Roll No. in Fig . , , " Roll No. in Words . , , , ', . PAPER: General Microbiology Course Code: ZOOL-415 Part-I (Compulsory) Q.l. Encircle the right answer, cutting and overwriting is not allowed. (lxlO=lO) - .. - -~ - ---- - ~-. -------- - --:-- __ ~_ Bacteria require low levelof ~~-yg~nfor- groWth and cannot tolerate atmospheric oxygen level . A) Aerobic B) Anaerobic C) Facultative D) Microaerophilic E) None ofthese ii .: Numerical Taxonomy depends on ~) % similarity index of strains to be compared B) Intuitive method of classifying bacteria C) Genetic relatedness D) Predictability of a classification scheme E) None of these The descendants of a single isolation in pure culture are called as A) Species B) Type species C) strain D) None of these Endospores are heat resistant because it contains: A) Calcium-dipicolinic acid B) Poly-f3-hydroxybutyrate C) Polyisoprenoid D) Heteropolysaccharides E) None of these Which microorganism cannot be grown on artificial media? A) Protozoa ' B) Yeast C) Algae D) Virus E) None of these Viable bacterial cells can be counted by: A) Turbidimetric method B) Direct microscopic count C) Membrane filter count D) Electronic enumeration of cells E) None of these 1. 111. iv. v. VI. P.T.O.
Transcript of UNIVERSITY OFTHEPUNJAB e
UNIVERSITY OF THE PUNJABSeventh Semester - 2019
Examination: B.S. 4 Years Program
," e
" Roll No. in Fig .,," Roll No. in Words .,,,
', .PAPER: General MicrobiologyCourse Code: ZOOL-415 Part-I (Compulsory)
Q.l. Encircle the right answer, cutting and overwriting is not allowed. (lxlO=lO)
- .. - -~ - ---- - ~-. -------- ---:-- __ ~_ Bacteria require low levelof ~~-yg~nfor- groWthand cannot tolerate atmospheric oxygen level .A) AerobicB) AnaerobicC) FacultativeD) MicroaerophilicE) None ofthese
ii .: Numerical Taxonomy depends on~) % similarity index of strains to be comparedB) Intuitive method of classifying bacteriaC) Genetic relatednessD) Predictability of a classification schemeE) None of theseThe descendants of a single isolation in pure culture are called asA) SpeciesB) Type speciesC) strainD) None of theseEndospores are heat resistant because it contains:A) Calcium-dipicolinic acidB) Poly-f3-hydroxybutyrateC) PolyisoprenoidD) HeteropolysaccharidesE) None of theseWhich microorganism cannot be grown on artificial media?A) Protozoa 'B) YeastC) AlgaeD) VirusE) None of theseViable bacterial cells can be counted by:A) Turbidimetric methodB) Direct microscopic countC) Membrane filter countD) Electronic enumeration of cellsE) None of these
1.
111.
iv.
v.
VI.
P.T.O.
VIlI.
VII. Application of ionIzing . d' t'- .-. - " . . . ..__ _ ~__ ~~~_.~a.IOns to stenlIze bIOlogical materials is
A) Incineration . -- --~. -= ~= ~- . ~~- --
B) Cold sterilizationC) Fractional sterilizationD) DesiccationE) None of thesePellicle is present in ------A) BacteriophageB) ProtozoaC) AlgaeD) FungiE) None of these-- was the first person to recognize significance ofbacterial and other microbes in disease:A) Robert HookeB) Roger BaconC) LeeuwenhoekD) Anton Von PlencizE) None of theseDuring this phase, the microbial cells divide steadily at a constantrate and log of the number of cells plotted against time results in astraight lineA) Lag phaseB) Exponential phaseC) Stationary PhaseD) None ofthese
IX.
x.
UNIVERSITY OF THE PUNJABSeventh Semester - 2019
Examination: B.S. 4 Years Program
,....•................. ~• •• •• •• Roll No. .. •~ ,
PAPER: General MicrobiologyCourse Code: ZOOL-415 Part - II
MAX. TIME: 2 Hrs. 45 Min.MAX. MARKS: 50
Q.2 . Give short answer of the following1. Sulphur dependent archeobacteria
11. Distinctive characters of algaeiii. Type strainiv. Genetic relatedness and taxonomyv. Distinguish between lithotrophs and organotrophs
Vl. Oxygen toxicity for microbesVll. Nosocomial infections
Vlll. Membrane filter countIX. Chemical composition of bacterial cell wall.x. Animalcules
2x10=20
Q. 3 Write brief note on the following 4 x 5 = 20a. Principal gases that affect bacterial growth.b. Preservation by overlaying cultures with mineral oilc. Arrangements of bacterial flagella.d. Procedure for isolating pure culture.
Q.4 Discuss comprehensively about colony characteristics with the help of 10
labeled diagrams.
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