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CytologyMCQ‐03(Biology/LifeSciencesMCQ:MultipleChoiceQuestionsinCytology/CellBiology)

MCQonPlasmaMembranePart‐2(Sample/Model/PracticeQuestionsforCSIRJRF/NETLifeScienceExamination,ICMRJRFExam,DBTBETJRFExam,,GATE

BTandXLExam,ICARJRFNEExam,PGEntranceExam,JAMExam,GSBiologyExamandMedicalEntranceExam)

1. Thecleavageofspectrinnetworkinthecellbytheproteolyticenzymecalpaneindicate:

A. ApoptosisB. NecrosisC. CellularinflammationD. Phagocytosis

2. Atphysiologicalconditions,cholesterolintheplasmamembrane:A. IncreasethedurabilityofplasmamembraneB. IncreasethepermeabilityofplasmamembraneC. DecreasethedurabilityofplasmamembraneD. Decreasethepermeabilityofplasmamembrane

A. A,BB. A,CC. A,DD. B,D

3. ThemolecularbasisofMNbloodgroupinhumanisA. DifferenceintheaminoacidsequenceintheGlycophorinB. DifferenceinthecarbohydratesequenceinGlycophorinC. DifferenceinfoldingpatternofGlycophorinD. Differenceinthedistributionalpatternofband3andglycophorinproteinsin

theplasmamembraneofRBC4. Whichofthefollowingtypeofmovementisleastpossibleforaphospholipidinthe

plasmamembrane?A. FlexionB. RotationC. LateraldiffusionD. Flip‐flop

5. Spectrin‐ankyrinnetworkofplasmamembraneisessentialforallfeaturesofbio‐membraneexcept:

A. Anchoringspecificionchannelsintheplasmamembranewww.easy

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B. AnchoringspecificionexchangersintheplasmamembraneC. AnchoringspecificiontransportersintheplasmamembraneD. AnchoringFoparticleofATPsynthaseintheplasmamembrane

6. Animportantdomainofankyrinproteinwhichbindstoapoptosisinducingproteinsofthecellsis:

A. N‐terminaldomainB. CentraldomainC. DeathdomainD. C‐terminal

7. WhichofthefollowingisacytoskeletalproteinA. GlycophorinAB. GlycophorinBC. SpectrinD. Band3protein

8. ThemostabundantphospholipidcomponentinthebacterialcellmembraneisA. PhosphatidylethanolamineB. PhosphatidylserineC. PhosphatidylcholineD. Cholesterol

9. Themainfunctionofband3proteinsintheplasmamembraneofRBCisA. Exchangeofchlorideion(Cl‐)withbicarbonateionsB. ExchangeofK+ionswithNa+ionsC. ExchangeofH+ionswithbiocarbonateionsD. ExchangeofH+ionswithCl‐ions

10. Thelengthoffattyacylchaininthefattyacidsofmembranelipidsusuallyrangefrom

A. 10–15carbonsB. 18–20carbonsC. 24–30carbonsD. 28–30carbons

11. Ankyrinproteinshavebindingsiteforthe_______subunitofspectrinproteinsA. AlphaB. BetaC. AlphaandbetaD. Alphaanddelta

12. Whatstructuralfeaturesofamembranearemajorcontributorstoitsselectivepermeability?

A. Phospholipidbilayerwww.easy

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B. Trans‐membraneproteinsC. GlycolipidsontheoutersurfaceofthemembraneD. Peripheralmembraneproteinsontheinsideofthemembrane

13. Watercanpasstheplasmamembrane:A. bysimplediffusiononlyB. ThroughaquaporinschannelonlyC. BysimplediffusionandthroughaquaporinsD. Watercannotcrossplasmamembrane

14. ThegeneticdisorderhemolyticanemiaiscausedbyA. MutationinspectrinandankyringenesB. Mutationinband3proteinofRBCC. MutationinGlycophorinAproteinofRBCD. MutationinGlycophorinBproteinofRBC

15. Ifthetemperatureofcultureofbacterialislowered,thecellrespondsmetabolicallytomaintainthefluidityofmembrane.Thiswillbeachievedby:

A. IntroducingmoredoublebondsinthefattyacylchainoffattyacidsB. Reshufflingthechainbetweendifferentphospholipidmoleculetoproduce

lipidswithtwounsaturatedfattyacidsC. Removingdoublebondsfromfattyacidstoincreasethesaturationoffatty

acidsD. Reshufflingthechainbetweendifferentphospholipidsmoleculestoproduce

lipidswithsaturatedfattyacidsA. A,BB. A,C,DC. A,DD. C,D

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