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BIOLOGY PAPER 1 PAST PAPER QUESTIONS GRADE A+ COMPLETE EXAM QUESTIONS AND 100% VERIFIED ANSWERS (2026/2027) PASS GUARANTEE

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BIOLOGY PAPER 1 PAST PAPER QUESTIONS GRADE A+ COMPLETE EXAM QUESTIONS AND 100% VERIFIED ANSWERS (2026/2027) PASS GUARANTEE

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BIOLOGY PAPER 1 PAST PAPER QUESTIONS GRADE A+ COMPLETE EXAM QUESTIONS AND 100% VERIFIED ANSWERS (2026/2027) PASS GUARANTEE

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BIOLOGY PAPER 1 PAST PAPER
QUESTIONS GRADE A+ COMPLETE
EXAM QUESTIONS AND 100% VERIFIED
ANSWERS (2026/2027) PASS
GUARANTEE
howGisGHIVGspreadGfromGpersonGtoGperson?G-GCORRECTGANSWERsexualGintercourse

whenGscientistsGproduceGaGvaccineGforGaGdiseaseGtheGvaccineGisGtestedGonGliveGanimals.GwhatGisGth
eGnextGstateGinGtestingGforGtheGvaccine?G-GCORRECTGANSWERtestingGonGhealthyGvolunteers

aGvaccineGforGHIVGisGimportantGbecauseGitGisGdifficultGtoGdevelopGsafeGdrugsGtoGdestroyGviruses.Gw
hyGisGitGdifficult?G-GCORRECTGANSWERdrugsGthatGdestroyGvirusesGalsoGdamageGbodyGtissues

whichGorganGcontainsGheartGcells?G-GCORRECTGANSWERcirculatoryGsystem

nameGoneGmedicalGconditionGthatGcouldGbeGtreatedGusingGheartGcellsGcreatedGfromGanGembryo?G-
GCORRECTGANSWERcoronaryGheartGdisease

giveGoneGreasonGwhyGaGpatientGmayGnotGbeGtreatedGwithGheartGcellsGcreatedGfromGanGembryoG-
GCORRECTGANSWERriskGofGinfection

howGwouldGonionGcellsGlookGdifferentGifGtheyGwereGseenGusingGanGelectronGmicroscope?G-
GCORRECTGANSWERtheGcellsGwouldGlookGlargerGandGwouldGshowGmoreGinternalGstructures

whichGenvironmentalGchangeGwouldGcauseGanGincreaseGinGtheGrateGofGtranspiration?G-
GCORRECTGANSWERanGincreasedGtemperature

, nameGoneGsubstanceGthatGthatGentersGcellsGtheoughGdiffusion(otherGthanGoxygenGandGwater)G-
GCORRECTGANSWERminerals/mineralGions

suggestGtwoGfactorsGthatGaffectGtheGrateGofGdiffusionGofGoxygenGintoGaGjellyGfishG-
GCORRECTGANSWER-Gtemperature

-thicknessGofGexchangeGsurface

nameGtheGorgansGwhereGgasGexchangeGtakesGplaceGinGaGfishG-GCORRECTGANSWERgills

explainGhowGtheGhumanGbreathingGsystemGisGadaptedGtoGmaximiseGtheGrateGofGgasGexchange?G-
GCORRECTGANSWER-largeGnumberGofGalveoli

-capillariesGhaveGcellsGthatGareGoneGwallGthickGtoGreduceGdiffusionGdistance

-lungsGareGventilatedGtoGmaintainGconcentrationGgradient

nameGoneGtimeGofGcellGinGaGpotatoGplantGthatGdoesGnotGcontainGchloroplastsG-
GCORRECTGANSWERrootGhairGcell

ToGpreventGfoodGpoisoningGinGhumans,GfarmersGvaccinateGtheirGanimalsGagainstGSalmonellaGbacte
ria.GHowGdoGSalmonellaGbacteriaGinGfoodGcauseGtheGsymptomsGofGvomitingGandGdiarrhoea?G-
GCORRECTGANSWERbacteriaGreleasesGtoxins

DuringGaGfoodGpoisoningGoutbreak,GscientistsGidentifiedGtheGfarmGwhereGtheGfoodGcameGfrom.GTh
eGfarmerGhadGnotGvaccinatedGtheGfarmGanimalsGagainstGSalmonellaGbacteria.GTheGfoodGpoisoningG
outbreakGcouldGhaveGbeenGpreventedGifGtheGfarmGanimalsGhadGbeenGvaccinated.GExplainGhow:•G

-theGimmuneGsystemsGofGanimalsGrespondGtoGaGvaccination•G

-theGimmuneGresponseGinGfarmGanimalsGpreventsGanGoutbreakGofGfoodGpoisoningGinGhumans.G-
GCORRECTGANSWER-

animalsGwhiteGbloodGcellsGproduceGantibodiesGagainstGtheGsalmonella/pathogen

-antibodiesGareGspecificGtoGsalmonella,GsoGspecificGantibodiesGbindGtoGsalmonella/antigens

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Uploaded on: September 30, 2026
Number of pages: 5
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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BIOLOGY PAPER 1 PAST PAPER QUESTIONS GRADE A+ COMPLETE EXAM QUESTIONS AND 100% VERIFIED ANSWERS (2026/2027) PASS GUARANTEE

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