BIL 150 Exam Answers 2025 – Complete Study Guide with Correct Solutions

BIL 150 WITH CORRECT ANSWERS
2025

plasmodesmavinvplantvcellsvarevmostvsimilarvinvfunctionvtovwhichvofvthevfollowingvstructuresvinvani
malvcells?v-vcorrect-answersv-gapvjunctions



ofvthevfollowingvwhatvisvthevmostvlikelyvpathwayvtakenvbyvavnewlyvsynthesizedvproteinvthatvwillvbev
secretedvbyvanvanimalvcell?v-vcorrect-answersv-
ERv>vGolgiv>vvesiclesvthatvfusevwithvavcell'svplasmavmembrane



whichvofvthevfollowingvprocessesvwouldvlikelyvincludevallvothervprocesses?v-vcorrect-answersv-
passivevtransport



whichvofvthevfollowingvfactorsvwouldvmostvlikelyvleadvtovincreasevmembranevfluidity?v-vcorrect-
answersv-avgreatervproportionvofvunsaturatedvphospholipids



youvarevworkingvonvavteamvthatvisvdesigningvavnewvdrug.vInvordervforvthisvdrugvtovwork,vitvmustvent
ervthevcytoplasmvofvspecificvtargetvcells.vWhichvofvthevfollowingvwouldvbevavfactorvthatvmightvbestv
determinevwhethervyourvmoleculevcouldvselectivelyventervintovthesevtargetvcells?v-vcorrect-
answersv-avhighvhydrophobicityvofvthevdrugvmolecule



avpatientvhasvhadvavseriousvaccidentvandvlostvavlotvofvblood.vInvanvattemptvtovreplenishvbodyvfluids,v
anvequalvvolumevofvdistilledvwatervtovthevamountvofvbloodvlossvisvtransferredvdirectlyvintovonevofvh

,ervveins.vWhatvwillvbevthevmostvprobable?v-vcorrect-answersv-
thevpatient'svredvbloodvcellsvwillvswellvbecausevthevbloodvfluidvhasvbecomevhypotonicvcomparedvt
ovthevcells



whichvofvthevfollowingvmembranevactivitiesvrequiresvenergyvfromvATPvhydrolysis?v-vcorrect-
answersv-Na+vionsvmovingvoutvofvthevmammalianvcell



watervpassesvquicklyvthroughvmembranesvbecause?v-vcorrect-answersv-
itvmovesvthroughvaquaporinvproteinsvinvthevmembrane



whichvofvthevfollowingvisvavcharacteristicvfeaturevofvavcarriervproteinvinvavcellvmembrane?v-vcorrect-
answersv-itvexhibitsvavspecificityvforvavparticularvtypevofvmolecule



cellvmembranesvarevstructurallyvasymmetrical.vWhichvofvthevfollowingvmayvbevavmostvlikelyvexplan
ationvforvthisvasymmetry?v-vcorrect-answersv-
thevtwovsidesvofvavcellvmembranevfacevdifferentvenvironmentsvandvmayvcarryvoutvdifferentvfunctio
nsvonveachvside



accordingvtovthevfluidvmosaicvmodelvofvcellvmembranes,vwhichvofvthevfollowingvisvavcorrectvstatem
entvaboutvthevcellvmembranevphospholipids?v-vcorrect-answersv-
theyvmayvmovevlaterallyvalongvthevplanevofvthevmembrane



ifvavpharmaceuticalvcompanyvwishesvtovdesignvavdrugvtovblockvthevinteractionvbetweenvavG-
proteinvreceptorvandvanvintracellularvG-
protein,vthenvtheirvdrugvshouldvbestvblockvwhichvofvthevfollowing?v-vcorrect-answersv-
thevbindingvsitevofvthevG-proteinvcoupledvreceptorvforvthevG-protein



invresearchvonvagingv(bothvcellularvagingvandvorganismalvaging),vitvhasvbeenvfoundvthatvagedvcellsv
dovnotvprogressvthroughvthevcellvcyclevasvtheyvhadvpreviously.vWhichvofvthevfollowingvwouldvprovi
devevidencevthatvthisvisvrelatedvtovcellvsignaling?v-vcorrect-answersv-
growthvfactorvsignalsvdovnotvbindvasvefficientlyvtovtheirvreceptorsvasvpreviously

, GTPasevactivityvisvinvolvedvinvthevregulationvofvsignalvtransductionvbecausevit?v-vcorrect-answersv-
hydrolyzesvthevGTPvboundvtovavG-protein



atvpuberty,vanvadolescentvfemalevbodyvchangesvinvbothvstructurevandvfunctionvofvseveralvorganvsy
stems,vprimarilyvundervthevinfluencevofvchangingvconcentrationsvofvestrogensvandvothervsteroidvh
ormones.vHowvcanvonevhormone,vsuchvasvestrogen,vmediatevsovmanyveffects?v-vcorrect-answersv-
becausevestrogenvbindsvtovspecificvreceptorsvonvmanyvdifferentvkindsvofvcells,veachvwhichvmayvhav
evdifferentvresponsesvtovitsvbinding



signalvmoleculesvcanvresultvinvavphosphorylationvcascadevby?v-vcorrect-answersv-
initiatingvconformationalvchangesvinvavseriesvofvmanyvdifferentvproteins



ifvanvenzymevisvaddedvtovavsolutionvwherevthevsubstratevandvproductvofvitsvreactionvarevinvequilibri
um,vwhatvwillvoccur?v-vcorrect-answersv-nothing,vthevreactionvwillvstayvatvequilibrium



choosevthevpairvofvtermsvbelowvthatvcorrectlyvcorrelatesvwithvthisvsentence:vcatabolismvisvtovanab
olismvasv_________visvtov_________v-vcorrect-answersv-exergonic,vendergonic



duringvavchemicalvreaction,vyouvdeterminevthatvthevconversionvofvAvtovBvbyvanvenzymevhasvavfreeve
nergyvchangevofv-
20vkcal/mol.vIfvyouvdoublevthevamountvofvenzymevinvthevreaction,vwhatvwillvbevthevfreevenergyvcha
ngevforvthevnewvreaction?v-vcorrect-answersv--20vkcal/mol



invglycolysis,vforveachvmoleculevofvglucosevoxidizedvtovpyruvate?v-vcorrect-answersv-
twovmoleculesvofvATPvarevconsumedvandvfourvmoleculesvofvATPvarevproduced



avprimaryvfunctionvofvthev"shuttles"vinvaerobicvcellularvrespirationvseemsvtovbe?v-vcorrect-
answersv-
transfervcapturedvelectronvenergyvintovthevmitochondriavforvusevinvelectronvtransfervchain