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ICMRJRFLifeScienceExamJuly2016ModelQuestionPaper(PracticeQuestionswithAnswerKey)

1. Whatarezooxanthellae?a. Deepseadwellingbrightlypigmentedfishb. Algaelivingincoralsc. Aspeciesofcrabd. Xanthomonasinfectedzooplankton

2. HemophiliaA andHemophiliaBhavenearly identicalphenotypes,but they resultfrommutationsindifferentgensontheXchromosome.Thisisanexampleof

a. Locusheterogeneityb. Epistaticinteractionc. Doubleheterozygosityd. Variableexpressivity

3. Naturalkillercellscanbedetectedinhumanperipheralbloodusinga. Anti‐cd3antibodyb. Anti‐cd25antibodyc. Anti‐cd69antibodyd. Anti‐cd16antibody

4. Balancedgeneticpolymorphismoccurswhenthereisselectionagainsta. Heterozygotesb. Allgenotypesc. Allhomozygotesd. Onlyhomozygousrecessive

5. Xthnerveisanexampleofa. Mixedcranialnerveb. Sensorycranialnervec. Spinalnerved. Motornerve

6. Whichofthefollowingvirusesisknownforitsantigenicvariation?a. Rabiesb. Influenzac. Yellowfeverd. Japaneseencephalitis

7. Scrapieiscausedbywww.easy

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a. Fungalproteinb. Bacterialproteinc. Plantlipoproteind. Prion

8. WhichofthefollowingcellssecreteE‐selectins?a. Eosinophilsb. Endothelialcellsc. Microglialcellsd. Epithelialcells

9. Whichofthefollowingcaninducepolyploidy?a. Cytochalasinb. Colchicinec. Quinined. Hydazin

10. DeoxypositionofdoxyriboseinDNAisata. 1stcarbonb. 3rdcarbonc. 2ndcarbond. 5thcarbon

11. Whichofthefollowingnon‐codingRNAsisinvolvedinRNAeditinga. SnRNAb. SiRNAc. gRNAd. MiRNA

12. Whichofthefollowingtypesofneuronsispredominantlylostinnarcolepsy?a. Cholinergicb. Orexinergicc. Noradrenergicd. Histaminergic

13. Areasoflowproductivityaretermedasa. Oligotrophicb. Heterotrophicc. Hypotrophicd. Eutrophic

14. Organismsthatareplanktoninthejuvenilestage,butnektonorbenthosintheadultstagearecalled

a. Meroplanktonb. Macroplanktonc. Holoplanktonwww.ea

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d. Picoplankton15. Thezygote:endosperm:materialtissueratioinawell‐developedseedis

a. 1:1:1b. 2:1:2c. 1:3:1d. 1:2:1

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