AAMC MCAT Practice Exam 1 With 100% Correct And Verified Answers 2025

AAMC MCAT Practice Exam 1 With
100% Correct And Verified
Answers 2025
Initheichromatographyiofitheireactionimixture,iwateriabsorb
edionicelluloseifunctionediasitheistationaryiphase.iWhatiwasi
theiprincipalifactorideterminingitheimigrationiofiindividuali
componentsiinitheisample?

A)iHydrogenibonding
B)iSoluteiconcentration
C)iStationaryiphaseiconcentration
D)iThicknessiofipaperi-iCORRECTiANSWERS-
A)iHydrogenibondingi

TheiansweritoithisiquestioniisiAibecauseitheirelativeiamounti
ofihydrogenibondingitoitheistationaryiphaseiwillidetermineit
heirelativeirateiofimigrationiofitheivariousicomponentsiinith
eisample.

Whatitypeiofifunctionaligroupiisiformediwheniasparticiacidir
eactsiwithianotheriaminoiaciditoiformiaipeptideibond?i

A)iAniamineigroupi
B)iAnialdehydeigroup
C)iAniamideigroup
D)iAicarboxyligroupi-iCORRECTiANSWERS-
C)iAniamideigroup

TheiansweritoithisiquestioniisiCibecauseitheifunctionaligrou
pithatiformsiduringipeptideibondiformationiisiknowniasiania
mideigroup.

Whichiresearchimethodologyiinvolvesitheiextended,isystema
ticiobservationiofiaicompleteisocialienvironment?


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,A)iComparativeimethods
B)iEthnographicimethods
C)iExperimentalimethods
D)iSurveyimethodsi-iCORRECTiANSWERS-
B)iEthnographicimethods

Ethnographicimethodsiareiaccuratelyidescribediinitheiquest
ioniasiinvolvingisystematiciobservationiofiaicompleteisocialie
nvironment.

comparativeimethodsi-iCORRECTiANSWERS-
researchericollectsidataiaboutidifferentisocialigroupsi(egiwo
rking-class;imiddle-classiandiupper-
class)iandithenicomparesioneigroupiwithianotheritoiidentifyi
whatiisievidentiinioneigroupibutinotianother

Whichitermirefersitoiclosedistatusipositionsithatihinderisoci
alimobility?
A)iClassisystems
B)iCasteisystems
C)iEconomicisystems
D)iFinancialisystemsi-iCORRECTiANSWERS-
B)iCasteisystems

TheicorrectiansweriisiB.iCasteisystemsidescribeiclosedistrati
ficationisystemsithatidoinotiallowiforisocialimobility.



Whatiassumptioniisibeingimadeiifiscientistsiconcludeithatias
particiacidiwasiformedibyitheiprebiologicalisynthesisiinitheip
assage?

A)iAsparticiacidiisiunstableiatitemperaturesibelowi150idegre
esiC.i
B)iAlliofitheimaliciacidiunderwentitheidehydrationireactionit
oiformifumaric/maleiciacid.i
C)iCompoundiAiandicyanideiwereiavailableioniprimitiveiEart
h.i


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,D)iTheireactionibetweeniammoniaiandifumariciacidiwasicata
lyzedibyitheipresenceiofiwater.i-iCORRECTiANSWERS-
C)iCompoundiAiandicyanideiwereiavailableioniprimitiveiEart
h.i

heiansweritoithisiquestioniisiCisince,iiniorderiforitheiexperim
entalireactionisequenceitoibeirelevantitoitheiprimordialiform
ationiofiasparticiacid,itheistartingimaterialsiusedi(Compoun
diAiandicyanide)iareiassumeditoihaveibeeniavailable.

Accordingitoitheidevelopedichromatographyiplateishownibel
ow,iwhatiisitheiapproximateiRfivalueiofiasparticiacid?

asparticiacidi=i2
solventifronti=i10i

A)i0.20
B)i0.50
C)i5
D)i10i-iCORRECTiANSWERS-
TheiansweritoithisiquestioniisiAi(0.20)ibecauseiRfiisitheiratioi
ofitheidistanceitravelledibyitheianalyteirelativeitoitheisolventi
frontiduringiaichromatographiciseparation.iAsparticiaciditra
velleditwoiunits,iwhileitheisolventifrontitravellediteniunits,igi
vingianiRfiofi2/10i=i0.20iforiasparticiacid.

WhichiofitheifollowingistatementsidoesiNOTicorrectlyidescri
beitheidehydrationiofimaliciaciditoifumariciacidiandimaleicia
cid?i

A)iTheireactionioccursimostireadilyiwithitertiaryialcohols.i
B)iTheireactioniinvolvesitheilossiofiaiwaterimolecule.i
C)iTheireactionihasiaicarbocationiintermediate.
D)iTheireactioniisistereospecific.i-iCORRECTiANSWERS-
D)iTheireactioniisistereospecific.

TheiansweritoithisiquestioniisiDibecauseitheifactithatibothifu
mariciandimaleiciacidiareiproducedimeansithatitheidehydrat
ioniofimaliciacidiisiNOTistereospecific.


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, Ifi2-pentanolireplacesi1-
pentanoliinitheireactionishowniiniFigurei3i(SN2),itheirateiofi
substitutioniisilessibecause:i
A)itheiC-Oibondiini2-pentanoliisistrongerithanitheiC-
Oibondiini1-pentanol.
B)ithereiisiaicompetingieliminationireactionithatislowsitheir
ateiofisubstitution.
C)ithereiisimoreistericihindranceiatitheioxygeniatomiini2-
pentanolithaniini1-pentanol,imakingiprotonationilessilikely.
D)ithereiisimoreistericihindranceiatithei2-positioniofi2-
pentanolithaniatithei1-positioniofi1-pentanol.i-
iCORRECTiANSWERS-

D)ithereiisimoreistericihindranceiatithei2-positioniofi2-
pentanolithaniatithei1-positioniofi1-pentanol.

TheiansweritoithisiquestioniisiDibecauseitheirateiofisubstitut
ioniofiprotonatedialcoholsiisisubjectitoistericihindrance.iThis
iinhibitsitheiabilityiofinucleophilesitoicollideiwithitheireactin

gielectrophilicicenteriandislowsitheirateiofireaction.

IfiaisolutionicontainingitheicompoundsishowniiniFigurei4,iisi
injectediintoiaigas-
liquidichromatograph,itheifirstipeakiobservediinitheigcitracei
isiattributableitoiwhichicompound?
A)iMethyl-2-butanol
B)iMethyl-2-butene
C)iChloro-2-methylbutane
D)iBromo-2-mehtylbutanei-iCORRECTiANSWERS-B)iMethyl-
2-butene

TheiansweritoithisiquestioniisiBibecausei2-methyl-2-
buteneiwilliexhibititheilowestimoleculariweightiandialsoithei
weakestiintermoleculariforcesiofiattraction.iThisisubstancei
willithereforeimigrateitheifastestiandibeitheifirstipeakiinithei
gasichromatographi(gc)itrace.




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