BIO 110 EXAM 2 QUESTIONS AND
ANSWERS RATED A+ SURE PASS!!!
Howmaremprokaryoticmcellsmdifferentmfrommeukaryoticmcells?m-
mCORRECTmANSWERSmA)mProkaryoticmcellsmhavemsimplemormnonexistentmendomembranemsystems
mandmnucleoids.m
Feedback:mCorrect.mSomemprokaryotesmhavemendomembranemsystems,mbutmtheymaremgenerallymle
ssmcomplexmthanmthosemfoundminmeukaryoticmcells,mandmmostmofmtheir
Howmismgiardiasismusuallymtransmitted?m-
mCORRECTmANSWERSmItmentersmdrinkingmwatermviamthemfecesmofmanminfectedmindividual,mandmthen
mentersmthemgutmofmanothermhostmthroughmthemmouth.m
Feedback:mCorrect.mAlthoughmitmcanmbemspreadmdirectlymthroughmfecal-
oralmcontact,mtransmissionmviamwaterm(contaminatedmwithmfecalmmatter)mismthemmoremcommonmr
oute.mAlwaysmboilmyourmwatermwhenmcamping,mandmdrinkmbottledmwatermwhenmtravelingmtomareas
mwheremyoumaremnotmcertainmaboutmthemwatermquality.
Whymwouldmampublicmhealthmworkermwhomwantedmtomcontrolmtrypanisomiasismcontractmanmentom
ologistm(ambiologistmwhomstudiesminsects)?m-
mCORRECTmANSWERSmBecausemtsetsemfliesmaremintermediatemhostsmofmtrypanosomes.m
Feedback:mCorrect.mManympublicmhealthmeffortsmfocusmonmthemvectormthatmspreadsmthemdisease.mI
nmthismcasemthemtsetsemflymismanmintermediatemhostmofmthemtrypanosome.
Themdinoflagellates,mapicomplexans,mandmciliatesmaremallmconsideredmmembersmofmKingdomm____
___mbecausemtheymallmhavem__________mbeneathmtheirmplasmammembrane.m-
mCORRECTmANSWERSmA)mAlveolata,msmallmalveolimcavities
Feedback:mCorrect.mThemalveolimcavitiesmaremamdiagnosticmfeaturemofmthismkingdom.
WhatmismthemadaptivemsignificancemofmNoctiluca'smglow?m-
mCORRECTmANSWERSmTomavoidmpredation.m
, Feedback:mCorrect.mThembioluminescencemofmdinoflagellates,msuchmasmNoctiluca,moccursminmrespo
nsemtomsmallmmechanicalmdisturbancesmofmthemcell.mThemlightmgenerallymlastsmformonlymamsecondmo
rmso,mbutmthemimpressionmofmamconstantmflickeringmglowmismduemtomampopulationmofmmillions.mItmism
thoughtmthatmthesemlightmflashesmaremmeantmsimplymtomstartlemgrazers.mAnothermpossibilitymismtha
tmthismlightmmaymattractmpredatorsmofmthemgrazers
Whatmismthemimmediatemreasonmthatmmanymcoralmreefsmaremdying?m-
mCORRECTmANSWERSmBecausemtheymaremlosingmtheirmsymbioticmdinoflagellatesmduemtomtemperat
uremchangesmormsomemotherminfluence.m
Feedback:mCorrect.mItmismnotmentirelymcertainmwhatmthemultimatemcausemis,mhowever,mitmappearsmt
omhavemsomethingmtomdomwithmenvironmentalmchanges.mWhatevermthemcause,mthemimmediatempr
oblemmismthemlossmofmphotosyntheticmdinoflagellatesm(zooxanthellae).
WhatmismthemsecondarymhostmofmthemPlasmodiummspeciesmthatmcausesmmalariaminmhumans?m-
mCORRECTmANSWERSmAnophelesmmosquitoesm
Feedback:mCorrect.mAnophelesmmosquitoesmtransmitmmalaria.mInsecticide-
treatedmbedmnetsmcanmbemverymeffectiveminmpreventingminfectionmfrommmalariambecausemthesemins
ectsmbitematmnight.
Drugsmhavemvariousmtargetsmthatmdisruptmthemfunctionmofmpathogens.mWhichmdrugmwouldmbemthe
mleastmusefulminmtreatingmanminfectionmcausedmbymamprotistmwithmmodifiedmmitochondria?m-
mCORRECTmANSWERSmOnemthatminterferedmwithmmitochondrialmenzymes.m
Feedback:mCorrect.mSincemthesemprotistsmdomnotmhavemfunctionalmmitochondria,mtherefore,manym
drugmthatmaffectedmmitochondrialmenzymesmwouldmnotmhavemmuchmaffectmonmthem.
SomemdatamshowmthatmthemenzymemthatmrepairsmUVmdamageminmdinoflagellatesmismnotmfunctional
matmwarmermtemperatures.mIfmglobalmwarmingmresultsminmanmincreaseminmseamtemperatures,mwhat
mothermeffectsmcouldmitmhavemonmorganisms?m-
mCORRECTmANSWERSmCoralmreefsmmightmgrowmmoremslowly.m
Feedback:mNotmthembestmresponse.mAlthoughmthismwouldmbempredictedmtomoccur,mcanmyoumthinkm
ofmothermeffects?
ANSWERS RATED A+ SURE PASS!!!
Howmaremprokaryoticmcellsmdifferentmfrommeukaryoticmcells?m-
mCORRECTmANSWERSmA)mProkaryoticmcellsmhavemsimplemormnonexistentmendomembranemsystems
mandmnucleoids.m
Feedback:mCorrect.mSomemprokaryotesmhavemendomembranemsystems,mbutmtheymaremgenerallymle
ssmcomplexmthanmthosemfoundminmeukaryoticmcells,mandmmostmofmtheir
Howmismgiardiasismusuallymtransmitted?m-
mCORRECTmANSWERSmItmentersmdrinkingmwatermviamthemfecesmofmanminfectedmindividual,mandmthen
mentersmthemgutmofmanothermhostmthroughmthemmouth.m
Feedback:mCorrect.mAlthoughmitmcanmbemspreadmdirectlymthroughmfecal-
oralmcontact,mtransmissionmviamwaterm(contaminatedmwithmfecalmmatter)mismthemmoremcommonmr
oute.mAlwaysmboilmyourmwatermwhenmcamping,mandmdrinkmbottledmwatermwhenmtravelingmtomareas
mwheremyoumaremnotmcertainmaboutmthemwatermquality.
Whymwouldmampublicmhealthmworkermwhomwantedmtomcontrolmtrypanisomiasismcontractmanmentom
ologistm(ambiologistmwhomstudiesminsects)?m-
mCORRECTmANSWERSmBecausemtsetsemfliesmaremintermediatemhostsmofmtrypanosomes.m
Feedback:mCorrect.mManympublicmhealthmeffortsmfocusmonmthemvectormthatmspreadsmthemdisease.mI
nmthismcasemthemtsetsemflymismanmintermediatemhostmofmthemtrypanosome.
Themdinoflagellates,mapicomplexans,mandmciliatesmaremallmconsideredmmembersmofmKingdomm____
___mbecausemtheymallmhavem__________mbeneathmtheirmplasmammembrane.m-
mCORRECTmANSWERSmA)mAlveolata,msmallmalveolimcavities
Feedback:mCorrect.mThemalveolimcavitiesmaremamdiagnosticmfeaturemofmthismkingdom.
WhatmismthemadaptivemsignificancemofmNoctiluca'smglow?m-
mCORRECTmANSWERSmTomavoidmpredation.m
, Feedback:mCorrect.mThembioluminescencemofmdinoflagellates,msuchmasmNoctiluca,moccursminmrespo
nsemtomsmallmmechanicalmdisturbancesmofmthemcell.mThemlightmgenerallymlastsmformonlymamsecondmo
rmso,mbutmthemimpressionmofmamconstantmflickeringmglowmismduemtomampopulationmofmmillions.mItmism
thoughtmthatmthesemlightmflashesmaremmeantmsimplymtomstartlemgrazers.mAnothermpossibilitymismtha
tmthismlightmmaymattractmpredatorsmofmthemgrazers
Whatmismthemimmediatemreasonmthatmmanymcoralmreefsmaremdying?m-
mCORRECTmANSWERSmBecausemtheymaremlosingmtheirmsymbioticmdinoflagellatesmduemtomtemperat
uremchangesmormsomemotherminfluence.m
Feedback:mCorrect.mItmismnotmentirelymcertainmwhatmthemultimatemcausemis,mhowever,mitmappearsmt
omhavemsomethingmtomdomwithmenvironmentalmchanges.mWhatevermthemcause,mthemimmediatempr
oblemmismthemlossmofmphotosyntheticmdinoflagellatesm(zooxanthellae).
WhatmismthemsecondarymhostmofmthemPlasmodiummspeciesmthatmcausesmmalariaminmhumans?m-
mCORRECTmANSWERSmAnophelesmmosquitoesm
Feedback:mCorrect.mAnophelesmmosquitoesmtransmitmmalaria.mInsecticide-
treatedmbedmnetsmcanmbemverymeffectiveminmpreventingminfectionmfrommmalariambecausemthesemins
ectsmbitematmnight.
Drugsmhavemvariousmtargetsmthatmdisruptmthemfunctionmofmpathogens.mWhichmdrugmwouldmbemthe
mleastmusefulminmtreatingmanminfectionmcausedmbymamprotistmwithmmodifiedmmitochondria?m-
mCORRECTmANSWERSmOnemthatminterferedmwithmmitochondrialmenzymes.m
Feedback:mCorrect.mSincemthesemprotistsmdomnotmhavemfunctionalmmitochondria,mtherefore,manym
drugmthatmaffectedmmitochondrialmenzymesmwouldmnotmhavemmuchmaffectmonmthem.
SomemdatamshowmthatmthemenzymemthatmrepairsmUVmdamageminmdinoflagellatesmismnotmfunctional
matmwarmermtemperatures.mIfmglobalmwarmingmresultsminmanmincreaseminmseamtemperatures,mwhat
mothermeffectsmcouldmitmhavemonmorganisms?m-
mCORRECTmANSWERSmCoralmreefsmmightmgrowmmoremslowly.m
Feedback:mNotmthembestmresponse.mAlthoughmthismwouldmbempredictedmtomoccur,mcanmyoumthinkm
ofmothermeffects?
