AQA A-Level Biology|QUESTIONS AND 100%
CORRECT ANSWERS | LATEST
2025/2026|ACCURATE ANSWERS
DescribeBtheBpassageBofBbloodBthroughBtheBrightBsideBofBtheBheartB-BANSWER- (superiorBandBinferior)BVenaBCava RightBatrium RightBAVBvalve RightBventricle SemiBlunarBvalve PulmonaryBArtery
DescribeBtheBpassageBofBbloodBthroughBtheBleftBsideBofBtheBheartB-BANSWER-PulmonaryBvein LeftBatrium LeftBAVBvalve LeftBventricle SemiBlunarBvalve Aorta
HowBdoesBtheBthicknessBofBtheBleftBventricleBwallsBcompareBtoBtheBrightBventricleBwalls?B- BANSWER-Thicker,BmoreBmuscularBwalls
WhatBisBtheBimportanceBofBtheBmuscleBtissueBinBtheBarteryBwalls?B-BANSWER-Contracts ArteriesBconstrictBtoBregulateBbloodBflow
WhyBareBtheBwallsBofBtheBleftBventricleBthickerBandBmoreBmuscularB?B-BANSWER- ContractsBmoreBpowerfullyB BloodBpumpedBoutBatBaBhigherBpressure PumpsBbloodBallBaroundBtheBbody
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WhyBdoBtheBventriclesBhaveBthickerBwallsBthanBtheBatria?B-BANSWER- SoBtheyBcanBpushBbloodBoutBofBtheBheartB AtriaBjustBneedsBtoBpushBbloodBtheBshortBdistanceBintoBventricles
WhatBisBtheBpurposeBofBtheBfunctionBattachingBtheBAVBvalvesBtoBtheBventricles?B-BANSWER- StopsBAVBvalvesBbeingBforcedBupBintoBatriaBwhenBventriclesBcontract
WhenBwillBaBvalveBopen?B-BANSWER- WhenBtheBpressureBBEHINDBtheBvalveBisBgreaterBthanBtheBpressureBinBfrontBofBtheBvalve
WhatBisBtheBimportanceBofBvalvesBonlyBopeningBwhenBtheBpressureBisBhighBbehindBthemBthanBinB front?B-BANSWER-BloodBflowsBinBONEBDIRECTION Unidirectional
WhatBisBtheBimportanceBofBtheBelasticBtissueBinBtheBarteryBwalls?B-BANSWER- StretchBatBhighBpressureBwhenBleftBventricleBcontracts RecoilBatBlowBpressureBwhenBleftBventricleBrelaxes SmoothBbloodBflow
WhatBareBtheBstagesBofBtheBcardiacBcycle?B-BANSWER-1.BVentriclesBrelaxBandBatriaBcontract 2.BVentriclesBcontractBandBatriaBrelax 3.BVentriclesBandBatriaBrelax
WhyBdoBtheBatriaBcontact?B-BANSWER-DecreasesBvolumeBofBchambers IncreasesBpressureBbehindBAVBvalveB(opens) BloodBpushedBintoBventricles
WhyBisBthereBaBslightBincreaseBinBventricleBpressureBandBvolumeBwhenBtheBatriaBcontract?B- BANSWER-VentriclesBreceiveBbloodBfromBcontractingBatria
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