BIO 152 FINAL EXAM QUESTIONS CORRECT ANSWERS NEW UPDATE 2026/2027

BIO 152 FINAL EXAM QUESTIONS
CORRECT ANSWERS NEW UPDATE
2026/2027
Whichmfeaturemismcommonmtomgills,mlungs,mandmtracheae?

A.mDeliveringmoxygenmdirectlymtomcellsmwithoutmamcirculatorymsystem

B.mLargemsurfacemarea

C.mCountercurrentmexchangemmechanism

D.mDeadmspacem-mCORRECTmANSWERSmB



Whatmwouldmbemthemconsequencesmifmwemweremtomreversemthemdirectionmofmwatermflowmovermthe
mgillsmofmamfish,mmovingmwaterminwardmpastmthemoperculum,mpastmthemgills,mthemoutmthemmouth?m


Thismreversalmofmwatermflowmwouldm_____.

A.mchangemthemexchangemofmgasesminmthembodymfrommcarbonmdioxidemoutmandmoxygebnminmtomcar
bonmdioxideminmandmoxygenmout

B.mreducemefficiencymofmgasmexchange

C.mincreasemthemefficiencymofmgasmexchangem-mCORRECTmANSWERSmB



Truemormfalse?mThemlungsmofmhumansmformmfrommthemembryonicmforegut.m-
mCORRECTmANSWERSmTrue




Truemormfalse?mThempressureminsidemthemhumanmchestmcavitymismalwaysmpositive,msomthemlungsmsta
ymrelativelyminflatedmevenmuponmexhalation.m-mCORRECTmANSWERSmFalse



Whichmlungmstructuremismamtinymsacmthatmfunctionsmasmanminterfacembetweenmairmandmblood?

A.mCapillary.

B.mAlveolus.

,C.mDiaphragm.

D.mEpithelium.m-mCORRECTmANSWERSmB



Whichmbarrier(s)mmustmO2mandmCO2mcrossmtompassmbetweenmairmandmbloodminsidemlungs?

A.mdiaphragm

B.mepithelialmcells

C.mextracellularmfluid

D.mcapillarymwallm-mCORRECTmANSWERSmB,mC,mD



Truemormfalse?mThemdrivingmforcemformthemunloadingmofmoxygenmfrommhemoglobinmintomtissuesmism
themdifferenceminmPCO2mlevelsmbetweenmthembloodmandmbodymtissues.m-
mCORRECTmANSWERSmFalse




Howmismmostmcarbonmdioxidemtransportedmfrommtissuesmtomthemlungs?

A.mAsmbicarbonatemionsm(HCO3−).

B.mAsmcarbonicmacid.

C.mAsmcarbonmdioxidemgas.

D.mAsmprotonsm(H+).m-mCORRECTmANSWERSmA.



Whichmofmthemfollowingmstatementsmaboutmthemoxygen-hemoglobinminteractionmismtrue?

A.mThemoxygen-
hemoglobinmdissociationmcurvemismexponential,mwhichmmeansmthatmhemoglobinmcanmrespondmqui
cklymtomsmallmchangesminmoxygenmdemand.

B.mThembindingmofmonemoxygenmmoleculemtomhemoglobinmstimulatesmthemunloadingmofmthemoxyge
nmmoleculesmthatmaremalreadymbound.

C.mThembindingmofmonemoxygenmmoleculemtomhemoglobinmstimulatesmthembindingmofmothermoxyge
nmmolecules.

D.mEachmhemoglobinmmoleculemcanmbindmonemoxygenmmolecule.m-mCORRECTmANSWERSmC

,Amsignificantmincreaseminmthemamountmofminterstitialmfluidmsurroundingmthemcapillarymbedsmofmamh
uman'smlungsmwillmcausem_____.

A.mamdecreaseminmthemamountmofmworkmneededmformeffectivemventilationmofmthemlungs

B.manmincreasemofmpressuremthatmwouldmcausemthemcapillarymbedsmtomburst

C.manmincreaseminmthemamountmofmcarbonmdioxidemmovingmfrommthembloodmtomthemlungs

D.manmincreaseminmthemamountmofmoxygenmmovingmfrommthemlungsmintomthemblood

E.mamdecreaseminmthemamountmofmoxygenmmovingmfrommthemlungsmintomthembloodm-
mCORRECTmANSWERSmE




Themoxygenmcontentmofmwatermincreasesmlinearlymwithmanmincreaseminmoxygenmpartialmpressure,mw
hilemthemoxygenmcontentmofmbloodmincreasesminmamsigmoidalm(S-shaped)mfashion.mWhy?

A.mCarbonicmanhydrasemcontributesmtomcarbonmdioxidemreleaseminmblood,mbutmnotmwater.

B.mThemBohrmshiftmismstrongerminmwatermthanminmblood.

C.mHemoglobinmshowsmcooperativemoxygenmbinding.

D.mOxygenmismtransportedmequallymbymhemoglobinmandmbloodmplasma.m-mCORRECTmANSWERSmC



Themhemocyaninmofmarthropodsmandmmolluscsmdiffersmfrommthemhemoglobinmofmmammalsminmtha
tm_____.

A.mthemproteinmofmhemocyaninmismnotmboundmtommetal

B.mhemocyaninmincludesmcyanicmacid

C.mhemocyaninmhasmproteinmcoupledmtomcoppermrathermthanmtomiron

D.mthemoxygenmdissociationmcurvemformhemocyaninmismlinear

E.mhemocyaninmcarriesmappreciablymmoremcarbonmdioxidem-mCORRECTmANSWERSmC



AnmdecreasemfrommpHm7.4mtompHm7.2mcausesmhemoglobinmtom_____.

A.mincreasemitsmbindingmofmH+

, B.mgivemupmmoremofmitsmoxygenmmolecules

C.mbindmmoremoxygenmmolecules

D.mreleasemallmboundmcarbonmdioxidemmolecules

E.mdenaturem-mCORRECTmANSWERSmB



Thempointmofmconnectionmbetweenmtwomcommunicatingmneuronsmismcalledmthem_____.

A.msynapse

B.mdendrite

C.mcellmbody

D.maxonmhillock

E.mgliam-mCORRECTmANSWERSmA



Inmamrestingmpotential,manmexamplemofmamcationmthatmismmoremabundantmasmamsoluteminmthemcytos
olmofmamneuronmthanmitmisminmtheminterstitialmfluidmoutsidemthemneuronmism_____.

A.mHCO3-

B.mK+

C.mCl-

D.mCa++

E.mNa+m-mCORRECTmANSWERSmB



Ifmthemactivitymofmthemsodium-
potassiummpumpmwasmcompletelymstopped,mwhatmwouldmhappenmtomthemneuron'smmembranemp
otential?

A.mimmediatemlossmofmrestingmpotential

B.mslowmdecreasemofmrestingmpotential

C.mimmediatemlossmofmactionmpotentials

D.mnomeffectm-mCORRECTmANSWERSmB