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MCAT Exam Practice Questions With Correct Answers 2024
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MCAT Exam Practice Questions With Correct Answers 2024
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MCAT Exam Practice Questions WithCorrect Answers 2024
A ustroke upatient ucomprehends uspeech ubut ucannot umove uher umouth uto uform uwords.
uWhich uof uthe ufollowing ubrain uareas uis ulikely uaffected?
■Broca's uarea
■Wernicke's uArea
■Arcuate ufasciculus
■Superior utemporal ugyrus u- ucorrect uanswer.Broca's uarea u(Broca's uarea ugoverns uthe
umotor ufunction uof ulanguage. uA ustroke uthat uaffects uBroca's uarea uwill uleave ureceptive
ulanguage uintact, ubut uword uformation uwill ube uaffected. uA ustroke uaffecting uWernicke's
uarea, uchoice u(B), uwill umake uit uso uthe uindividual uis uunable uto ucomprehend uspeech. uA
ustroke uaffecting uthe uarcuate ufasciculus, uchoice u(C), uwill uresult uin uan uinability uto urepeat
uwords uheard ubut uspontaneous ulanguage uproduction uis uintact. uThe usuperior utemporal
ugyrus, uchoice u(D), uis uwhere uWernicke's uarea uis ulocated.)
Each uindividual uin ua ugroup uof uteenagers uis uasked uto uestimate uthe uheight uof ua utree. uOne
uindividual uestimates uthe uheight uto ube u25 ufeet, ubut uafter udiscussing uwith uthe ugroup uis
uconvinced uthat uthe uheight uis ulikely ucloser uto u40 ufeet. uWhich utype uof uconformity uis useen
uhere?
■Obedience
■Identification
■Internalization
■Compliance u- ucorrect uanswer.Internalization u(Internalization urefers uto uthe utype uof
uconformity uin uwhich uan uindividual uchanges uher uoutward uopinion uto umatch uthe ugroup
uand ualso upersonally uagrees uwith uthose uideas.)
Which uof uthe ufollowing uneurotransmitters uis uassociated uwith uboth uschizophrenia uand
uParkinson's udisease?
■GABA
■Serotonin
■Dopamine
■Enkephalins u- ucorrect uanswer.Dopamine u(Schizophrenia uis uassociated uwith uhigh
ulevels uof udopamine, uor uhigh usensitivity uto udopamine. uParkinson's udisease uis uassociated
uwith udestruction uof uthe udopaminergic uneurons uin uthe ubasal uganglia.)
Primary ugroups udiffer ufrom usecondary ugroups uin uthat:
■A) uprimary ugroups uare ushorter-lived uthan usecondary ugroups.
,■B) uprimary ugroups uare ularger uthan usecondary ugroups.
■C) uprimary ugroups uare uformed uof ustronger ubonds uthan usecondary ugroups.
■D) uprimary ugroups uare uassigned uwhile usecondary ugroups uare uchosen. u- ucorrect
uanswer.C u(Primary ugroups uhave udirect uand uclose ubonds ubetween umembers, uproviding
uwarm, upersonal, uand uintimate urelationships uto uits umembers. uSecondary ugroups, uin
ucontrast, uform usuperficial ubonds uand utend uto ulast ufor ua ushorter uperiod uof utime.)
A ustudent uis uvolunteering uin ua uhospital uwith ua ustroke ucenter. uWhen uasked uwhat uhe
ubelieves uis uthe uprevalence uof ustroke uamong uthose ugreater uthan u65 uyears uold, uthe
ustudent ustates uthat uit uis uprobably uabout u40% ueven uthough udata uanalysis uindicates uthat
uit uis usignificantly ulower. uWhat uaccounts ufor uthis uerror?
■Deductive ureasoning
■Representativeness uheuristic
■Base urate ufallacy
■Confirmation ubias u- ucorrect uanswer.Base urate ufallacy u(The ubase urate ufallacy uoccurs
uwhen uprototypical uor ustereotypical ufactors uare uused ufor uanalysis urather uthan uactual
udata. uBecause uthe ustudent uis uvolunteering uin ua uhospital uwith ua ustroke ucenter, uhe usees
umore upatients uwho uhave uexperienced ua ustroke uthan uwould ube uexpected uin ua uhospital
uwithout ua ustroke ucenter. uThus, uthis uexperience uchanges uhis uperception uand uresults uin
ubase urate ufallacy. uDeductive ureasoning, uchoice u(A), urefers uto udrawing uconclusions uby
uintegrating udifferent upieces uof uevidence. uThe urepresentativeness uheuristic, uchoice u(B),
uinvolves ucategorization uand uclassification ubased uon uhow uwell uan uindividual uexample ufits
uits ucategory. uConfirmation ubias, uchoice u(D), uoccurs uwhen ua uperson uonly useeks
uinformation uthat ureinforces uhis uor uher uopinions.)
Why uare utriacylglycerols uused uin uthe uhuman ubody ufor uenergy ustorage?
■A) uThey uare uhighly uhydrated, uand utherefore ucan ustore ulots uof uenergy.
■B) uThey ualways uhave ushort ufatty uacid uchains, ufor ueasy uaccess uby umetabolic uenzymes.
■C) uThe ucarbon uatoms uof uthe ufatty uacid uchains uare uhighly ureduced, uand utherefore uyield
umore uenergy uupon uoxidation.
■D) uPolysaccharides, uwhich uwould uactually ube ua ubetter uenergy ustorage uform, uwould
udissolve uin uthe ubody. u- ucorrect uanswer.C u(Triacylglycerols uare uhighly uhydrophobic uand
utherefore unot uhighly uhydrated u(which uwould uadd uextra uweight ufrom uthe uwater uof
uhydration, utaking uaway ufrom uthe uenergy udensity uof uthese umolecules), ueliminating
uchoice u(A). uThe ufatty uacid uchains uproduce utwice uas umuch uenergy uas upolysaccharides
uduring uoxidation ubecause uthey uare uhighly ureduced. uThe ufatty uacid uchains uvary uin ulength
uand usaturation.)
Prolonged uvitamin uB12 udeficiency ucan ube uassociated uwith usubacute ucombined
udegeneration uof uthe uspinal ucord. uPatients uwith uthis udisease uhave udifficulty uwalking
ubecause uthey ulose uthe uability uto ufeel uwhere utheir ufeet uare uin uspace. uThis urepresents ua
uloss uof:
■vestibular usense.
■kinesthetic usense.
■parallel uprocessing.
, ■feature udetection. u- ucorrect uanswer.Kinesthetic usense u(Kinesthetic usense, uor
uproprioception, urefers uto uthe uability uto utell uwhere ubody uparts uare uin uthree-dimensional
uspace. uThe usensors ufor uproprioception uare ufound upredominantly uin uthe umuscles uand
ujoints. uLoss uof uvestibular usense, uchoice u(A), uwould ualso ucause udifficulty uwalking, ubut
uthis uwould ube udue uto ua usense uof udizziness uor uvertigo, unot uan uinability uto ufeel uone's
ufeet.)
Which uof uthe ufollowing uis/are ufunction(s) uof uNADPH uin uthe ucell?
►I. uAntimicrobial uresistance uvia ubacterial udestruction uby ubleach uwithin ulysosomes.
►II. uInvolvement uin uthe uproduction uof uthe uprecursors uto usteroid uhormones.
►III. uFunctional ucarriage uof uenergy uacross uorganelle umembranes ufor uuse uwithin uthe
umitochondria
A) uI uonly
B) uI uand uII uonly
C) uII uand uIII uonly
D) uI, uII, uand uIII u- ucorrect uanswer.B u(NADPH uhas uthree uprimary ufunctions: uinvolvement uin
ubiosynthesis uof ulipids uand ucholesterol u(the uprecursor uto usteroid uhormones), uproduction
uof ubactericidal ubleach uin uthe ulysosomes uof ucertain uwhite ublood ucells, uand umaintenance
uof ua usupply uof ureduced uglutathione ufor uprotection uagainst ufree uradical udamage. uEnergy
ucarriage uis uan uimportant ufunction uof uNADH, unot uNADPH.)
Increases uin uwhich uof uthe ufollowing uhormones ucauses usleepiness?
■Cortisol
■Growth uhormone
■Melatonin
■Oxytocin u- ucorrect uanswer.Melatonin u(As ulight udiminishes uthroughout uthe uday, uthe
upineal ugland uincreases usecretion uof umelatonin, uresulting uin usleepiness. uCortisol ulevels,
uchoice u(A), uincrease uthroughout uthe uearly umorning, uresulting uin uwakefulness. uGrowth
uhormone usecretion, uchoice u(B), upeaks uduring uslow-wave usleep. uOxytocin, uchoice u(D),
uis uassociated uwith uuterine ucontractions uin uchildbirth, umilk uletdown, uand ubonding
ubehavior.)
How udoes uthe uinner umitochondrial umembrane udiffer ufrom uthe uouter umitochondrial
umembrane?
A) uThe uinner umitochondrial umembrane uis umore upermeable uand ulacks ucholesterol.
B) uThe uinner umitochondrial umembrane uis uless upermeable uand ulacks ucholesterol.
C) uThe uinner umitochondrial umembrane uis umore upermeable uand uhas ucholesterol.
D) uThe uinner umitochondrial umembrane uis uless upermeable uand uhas ucholesterol. u- ucorrect
uanswer.B u(The uouter umitochondrial umembrane uis uvery upermeable uwhile uthe uinner
umembrane uis uhighly uimpermeable. uThe uinner umitochondrial umembrane uis uunique uwithin
uthe ucell ubecause uit ulacks ucholesterol.)
Some ucellular umembranes usequester uhydrogen uions uon uone uside uin uorder uto ucreate uan
uacidic uor ubasic uenvironment. uFor uexample, uthe umembrane uof ulysosomes ucontains
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