MCAT practice questions and Answers Updated 2026

MCAT practice
questions and
Answers Updated
2026
ABstrokeBpatientBcomprehendsBspeechBbutBcannotBmoveBherBmouthBtoBformBwords.B
WhichBofBtheBfollowingBbrainBareasBisBlikelyBaffected?

■Broca'sBarea

■Wernicke'sBArea

■ArcuateBfasciculus

■SuperiorBtemporalBgyrusB-
BAnswerBBroca'sBareaB(Broca'sBareaBgovernsBtheBmotorBfunctionBofBlanguage.BABstro
keBthatBaffectsBBroca'sBareaBwillBleaveBreceptiveBlanguageBintact,BbutBwordBformation
BwillBbeBaffected.BABstrokeBaffectingBWernicke'sBarea,BchoiceB(B),BwillBmakeBitBsoBthe
BindividualBisBunableBtoBcomprehendBspeech.BABstrokeBaffectingBtheBarcuateBfasciculu
s,BchoiceB(C),BwillBresultBinBanBinabilityBtoBrepeatBwordsBheardBbutBspontaneousBlan
guageBproductionBisBintact.BTheBsuperiorBtemporalBgyrus,BchoiceB(D),BisBwhereBWerni
cke'sBareaBisBlocated.)



EachBindividualBinBaBgroupBofBteenagersBisBaskedBtoBestimateBtheBheightBofBaBtree.B
OneBindividualBestimatesBtheBheightBtoBbeB25Bfeet,BbutBafterBdiscussingBwithBtheBgr
oupBisBconvincedBthatBtheBheightBisBlikelyBcloserBtoB40Bfeet.BWhichBtypeBofBconform
ityBisBseenBhere?

,■Obedience

■Identification

■Internalization

■ComplianceB-
BAnswerBInternalizationB(InternalizationBrefersBtoBtheBtypeBofBconformityBinBwhichBan
BindividualBchangesBherBoutwardBopinionBtoBmatchBtheBgroupBandBalsoBpersonallyBa
greesBwithBthoseBideas.)



WhichBofBtheBfollowingBneurotransmittersBisBassociatedBwithBbothBschizophreniaBandB
Parkinson'sBdisease?

■GABA

■Serotonin

■Dopamine

■EnkephalinsB-
BAnswerBDopamineB(SchizophreniaBisBassociatedBwithBhighBlevelsBofBdopamine,BorBhi
ghBsensitivityBtoBdopamine.BParkinson'sBdiseaseBisBassociatedBwithBdestructionBofBthe
BdopaminergicBneuronsBinBtheBbasalBganglia.)



PrimaryBgroupsBdifferBfromBsecondaryBgroupsBinBthat:

■A)BprimaryBgroupsBareBshorter-livedBthanBsecondaryBgroups.

■B)BprimaryBgroupsBareBlargerBthanBsecondaryBgroups.

■C)BprimaryBgroupsBareBformedBofBstrongerBbondsBthanBsecondaryBgroups.

■D)BprimaryBgroupsBareBassignedBwhileBsecondaryBgroupsBareBchosen.B-
BAnswerBCB(PrimaryBgroupsBhaveBdirectBandBcloseBbondsBbetweenBmembers,Bprovidi
ngBwarm,Bpersonal,BandBintimateBrelationshipsBtoBitsBmembers.BSecondaryBgroups,Bin
Bcontrast,BformBsuperficialBbondsBandBtendBtoBlastBforBaBshorterBperiodBofBtime.)



ABstudentBisBvolunteeringBinBaBhospitalBwithBaBstrokeBcenter.BWhenBaskedBwhatBheB
believesBisBtheBprevalenceBofBstrokeBamongBthoseBgreaterBthanB65ByearsBold,BtheBst
udentBstatesBthatBitBisBprobablyBaboutB40%BevenBthoughBdataBanalysisBindicatesBthat
BitBisBsignificantlyBlower.BWhatBaccountsBforBthisBerror?

■DeductiveBreasoning

, ■RepresentativenessBheuristic

■BaseBrateBfallacy

■ConfirmationBbiasB-
BAnswerBBaseBrateBfallacyB(TheBbaseBrateBfallacyBoccursBwhenBprototypicalBorBstereo
typicalBfactorsBareBusedBforBanalysisBratherBthanBactualBdata.BBecauseBtheBstudentBis
BvolunteeringBinBaBhospitalBwithBaBstrokeBcenter,BheBseesBmoreBpatientsBwhoBhaveB
experiencedBaBstrokeBthanBwouldBbeBexpectedBinBaBhospitalBwithoutBaBstrokeBcenter.
BThus,BthisBexperienceBchangesBhisBperceptionBandBresultsBinBbaseBrateBfallacy.BDedu
ctiveBreasoning,BchoiceB(A),BrefersBtoBdrawingBconclusionsBbyBintegratingBdifferentBpie
cesBofBevidence.BTheBrepresentativenessBheuristic,BchoiceB(B),BinvolvesBcategorizationB
andBclassificationBbasedBonBhowBwellBanBindividualBexampleBfitsBitsBcategory.BConfir
mationBbias,BchoiceB(D),BoccursBwhenBaBpersonBonlyBseeksBinformationBthatBreinforce
sBhisBorBherBopinions.)



WhyBareBtriacylglycerolsBusedBinBtheBhumanBbodyBforBenergyBstorage?

■A)BTheyBareBhighlyBhydrated,BandBthereforeBcanBstoreBlotsBofBenergy.

■B)BTheyBalwaysBhaveBshortBfattyBacidBchains,BforBeasyBaccessBbyBmetabolicBenzyme
s.

■C)BTheBcarbonBatomsBofBtheBfattyBacidBchainsBareBhighlyBreduced,BandBthereforeByi
eldBmoreBenergyBuponBoxidation.

■D)BPolysaccharides,BwhichBwouldBactuallyBbeBaBbetterBenergyBstorageBform,BwouldB
dissolveBinBtheBbody.B-
BAnswerBCB(TriacylglycerolsBareBhighlyBhydrophobicBandBthereforeBnotBhighlyBhydrate
dB(whichBwouldBaddBextraBweightBfromBtheBwaterBofBhydration,BtakingBawayBfromBt
heBenergyBdensityBofBtheseBmolecules),BeliminatingBchoiceB(A).BTheBfattyBacidBchains
BproduceBtwiceBasBmuchBenergyBasBpolysaccharidesBduringBoxidationBbecauseBtheyBa
reBhighlyBreduced.BTheBfattyBacidBchainsBvaryBinBlengthBandBsaturation.)



ProlongedBvitaminBB12BdeficiencyBcanBbeBassociatedBwithBsubacuteBcombinedBdegene
rationBofBtheBspinalBcord.BPatientsBwithBthisBdiseaseBhaveBdifficultyBwalkingBbecauseB
theyBloseBtheBabilityBtoBfeelBwhereBtheirBfeetBareBinBspace.BThisBrepresentsBaBlossBo
f:

■vestibularBsense.

■kinestheticBsense.

■parallelBprocessing.