Straighterline Micro 250 Final Prep Exam
b b b b b b
With 100% Correct And Verified Answers 2
b b b b b b
024
WhichbclassbofbeukaryoticbmicroorganismsbcanbbebsubdividedbintobgroupsbsuchbasbMastig
ophora,bSarcodina,bCiliophora,bandbApicomplexa?
A.bHelminthsb
B.bAlgae
C.bProtozoa
D.bFungib-bCorrectbAnswer-Protozoa
Geneticbmaterialbcanbbebexcisedbfrombonebchromosomebandbdirectlybintegratedbintobanoth
erbvia
A.bconjugation.
B.btransformation.
C.btransduction.
D.btransposons.b-bCorrectbAnswer-transposons.
Whichbimmunebcellbsecretesbnumerousbcytokinesbthatbhelpbtobcoordinatebthebresponsebofb
otherbimmunebcells?
A.bBbcell
B.bTHbcell
C.bTCbcell
D.bPlateletsb-bCorrectbAnswer-THbcell
WhichbofbthebfollowingbenzymesbarebusedbtobamplifybDNAbduringbPCR?
A.brestrictionbendonuclease
B.bDNAbpolymerase
C.breversebtranscriptase
D.bDNAbligaseb-bCorrectbAnswer-DNAbpolymerase
,Inbthebnitrogenbcycle,bwhichbofbthebfollowingbstepsbinvolvesbremovalbofbnitrogenbfrombthebat
mospherebbybbacteria?b-bCorrectbAnswer-
nitrogenbfixation,bInbnitrogenbfixation,bnitrogenbisbremovedbfrombthebatmospherebbybnitroge
n-fixingbbacteriabandbconvertedbtobammonia.
Ifbenoughbh+bionsbarebaddedbtobpurebwaterbtobraisebthebH+bconcentrationbofbthebsolutionbtob
tenbtimesbhigherbthanbtheboriginalbconcentration,bwhatbisbthebresultingbOH-
bconcentrationbofbthebsolution?b-bCorrectbAnswer-10b-8M
Fungibarebablebtobreproducebasexuallybbybcreatingbconidiosporesbandbsporangiospores.bW
hichbofbthebfollowingbisbanbaccuratebexplanationbforbwhybitbisbadvantageousbthatbtheybarebal
sobcapablebofbsexualbreproduction?
Selectbone:
a.bAsexuallybproducedboffspringbarebmoreblikelybtobcompetebforbresourcesbandbwillbkillboffbth
ebparentalbfungi.
b.bFungibnormallybproducebsexuallybbutbproducebasexuallybinbharshbconditionsbsuchbasbse
verebdrought.
c.bOffspringbfrombtwobparentsbmaybhavebvariationsbinbformbandbfunctionbthatbcontributebtobs
urvivalbofbthebspecies.
d.bSexualbreproductionbproducesbmoreboffspringbatbabfasterbratebthanbsporebformation.b-
bCorrectbAnswer-
Offspringbfrombtwobparentsbmaybhavebvariationsbinbformbandbfunctionbthatbcontributebtobsur
vivalbofbthebspecies.
Inbablaboratorybbacterialbcellbculturebthatbhasbbeenbinfectedbbybabvirus,bplaquesbarebareasbi
nbwhich
Selectbone:
a.bbacterialbcellsbarebresistantbtobthebvirusbandbhavebnotbbeenbinfected.
b.btherebisbnobnutrientbavailablebforbthebbacteriabtobgrow.
c.bthebvirusbhasbspreadbandbleftbbehindbthebremainsbofbdeadbcells.
d.bthebvirusbhasbnotbyetbspreadbtobthatbareabofbcells.b-bCorrectbAnswer-
thebvirusbhasbspreadbandbleftbbehindbthebremainsbofbdeadbcells.
Thebsun'sbenergybisbdeliveredbasbdiscretebpacketsbthatbtravelbasbwavesbandbarebcalled
Selectbone:
a.bATP.
b.bcarotenoids.
c.bNADP.
d.bphotons.b-bCorrectbAnswer-photons.
Whichbofbthebfollowingbisbabcharacteristicbofbaerobicbrespiration?
Selectbone:
a.bOxygen-containingbionsbactbasbthebfinalbelectronbacceptorsbinbelectronbtransport.
b.bThebprocessbincludesbglycolysis,bthebKrebsbcycle,bandbthebelectronbtransportbchain.
,Straighterline Micro 250 Final Prep Exam
b b b b b b
With 100% Correct And Verified Answers 2
b b b b b b
024
c.bAerobicbrespirationbproducesbabtotalbofb2bATPbmolecules.
d.bAerobicbrespirationbproducesblacticbacid.b-bCorrectbAnswer-
Thebthreebstagesbofbaerobicbrespirationbarebglycolysis,bthebKrebsbcycle,bandbthebelectronbtr
ansportbchain.
nbcompletingbproteinbsynthesisbinbabprokaryote,bwhatbbasicbmessagebisbcarriedbbybabspecia
lizedbcodonbthatbhasbnobcorrespondingbtRNA?
Selectbone:
a.b"Foldbpeptidebchain."
b.b"Terminatebhere."
c.b"Addbcofactor."
d.b"Clipbstartingbaminobacid."b-bCorrectbAnswer-
"Terminatebhere."bThebspecializedbcodonbsignalsbthebendbofbproteinbsynthesis;btherebisbnot
bRNAbbecausebitbisbonlybneededbifbthebprocessbisbtobcontinue.
Microbialbdrugbresistancebcanbbebcausedbbybmutationsborbbybintroductionbofbnewbgenesbint
obabpopulation.bWhichbofbthebfollowingbcanbonlybbebcausedbbybthebintroductionbofbnewbgene
sbintobabpopulation?
Selectbone:
a.babmetabolicbpathwaybinbthebbacteriumbisbshutbdown
b.bbindingbsitesbforbthebdrugbarebreducedbinbnumberborbaffinitybtobthebdrug
c.bnewbenzymesbthatbinactivatebthebdrugbarebsynthesized
d.buptakebofbthebdrugbintobthebbacteriumbisbdiminishedb-bCorrectbAnswer-
newbenzymesbthatbinactivatebthebdrugbarebsynthesized.bThisbcanbonlyboccurbifbnewbgenesba
rebintroducedbintobthebpopulation.
Whybdobthebhands,bfeet,bandbbreastsbhavebmoreblymphaticbvesselsbforbhostbdefensebthanbo
therbareasbofbthebhumanbbody?
Selectbone:
a.bTheybhavebabhighbriskbforbinfectionbduebtobfrequentbcontact.
b.bTheybhavebabgreaterbdensitybofbnerves.
c.bTheybrequirebcomplexbmovementbofbfluidsbfrombthebextremities.
d.bTheybareblocatedbablongbdistancebfrombthebthalamus.b-bCorrectbAnswer-
Theybhavebabhighbriskbforbinfectionbduebtobfrequentbcontact.
Penicillinbfunctionsbasbanbantimicrobialbagentbbybinhibitingbbacterial
Selectbone:
a.bcellbwallbsynthesis.
b.bfolicbacidbsynthesis.
c.bproteinbsynthesis.
d.bRNAbandbDNAbfunction.b-bCorrectbAnswer-
cellbwallbsynthesis.bPenicillinbbelongsbtobabclassbofbantibacterialbagentsbthatbinterferebwithbt
, hebproductionbofbthebmaterialbthatbmakesbupbthebbacterialbcellbwall.bThebbacteriabmustbcons
tantlybreplacebthisbmaterialborbtheybwillbbecomebsusceptiblebtobrupturebduebtobosmoticbpres
sure.
Ifbenoughbionsbarebaddedbtobpurebwaterbtobraisebthebconcentrationbofbthebsolutionbtobtenbtim
esbhigherbthanbtheboriginalbconcentration,bwhatbisbthebresultingbconcentrationbofbthebsolutio
n?b-bCorrectbAnswer-
Thebstudybofbevolutionarybrelationshipsbamongborganismsbisbcalledb-bCorrectbAnswer-
phylogeny
Thebthreebcellbtypesbdiscussed,beukaryotes,barchaea,bandbbacteria,ballbderivedbfromb-
bCorrectbAnswer-LastbUniversalbCommonbAncestor
Organismsbcalledbparasitesbareb-bCorrectbAnswer-alwaysbharmfulbtobtheirbhost.
Whichbofbthebfollowingbdoesbnotbindicatebmicrobebinvolvementbinbenergybandbnutrientbflowb-
bCorrectbAnswer-Thermalbhotbspringsbwarmedbbybheatbfrombearth'sbinterior
Thebsubatomicbparticlesbthatbsurroundbthebnucleusbarebtheb-bCorrectbAnswer-Electrons
Thebnumberbonebworldwidebinfectiousbdiseasesbareb-bCorrectbAnswer-
respiratorybdiseases
Abfatbisbcalledb_____bifballbcarbonsbofbthebfattybacidbchainbarebsingle-
bondedbtob2botherbcarbonsbandb2bhydrogens.b-bCorrectbAnswer-saturated
OnebtechniquebforbstainingbbacteriabforbviewingbunderbthebmicroscopebisbcalledbthebGrambs
tain.bInbthisbtechnique,balcoholbisbusedbasbabdecolorizerbbecausebitbdegradesbthebouterbme
mbranebfoundbinbsomebbacteria.bWhatbchemicalbcomponentbofbthebcellbdoesbalcoholbaffect
?b-bCorrectbAnswer-lipid
Ifbabmicrobiologistbisbstudyingbabspecimenbatbabtotalbmagnificationbofb950X,bwhatbisbthebma
gnifyingbpowerbofbthebobjectiveblensbifbthebocularblensbisb10X?b-bCorrectbAnswer-95X
NASAbhasbpublishedbablistbofbcriteriabforbidentifyingbfossilbbacteriabinbsamplesbfrombMars,ba
sbpartbofbabsearchbforbevidencebofblife.bWhichbofbthebfollowingbisbgoodbevidencebforbthebpres
encebofbbacterialbcells?b-bCorrectbAnswer-cellbsizebofb0.5btob2bmicrons
Whichbtypebofbmicroscopebachievesbthebgreatestbresolutionbandbhighestbmagnification?b-
bCorrectbAnswer-electron
Whichbofbthebfollowingbisbproducedbbybaddingb1%btob5%bagarbtobnutrientbbrothbthatbisbthenb
boiledbandbcooled?b-bCorrectbAnswer-absolidbmedium
abspongiformbencephalopathybofbhumansb-bCorrectbAnswer-Creutzfeldt-Jacobbdisease
b b b b b b
With 100% Correct And Verified Answers 2
b b b b b b
024
WhichbclassbofbeukaryoticbmicroorganismsbcanbbebsubdividedbintobgroupsbsuchbasbMastig
ophora,bSarcodina,bCiliophora,bandbApicomplexa?
A.bHelminthsb
B.bAlgae
C.bProtozoa
D.bFungib-bCorrectbAnswer-Protozoa
Geneticbmaterialbcanbbebexcisedbfrombonebchromosomebandbdirectlybintegratedbintobanoth
erbvia
A.bconjugation.
B.btransformation.
C.btransduction.
D.btransposons.b-bCorrectbAnswer-transposons.
Whichbimmunebcellbsecretesbnumerousbcytokinesbthatbhelpbtobcoordinatebthebresponsebofb
otherbimmunebcells?
A.bBbcell
B.bTHbcell
C.bTCbcell
D.bPlateletsb-bCorrectbAnswer-THbcell
WhichbofbthebfollowingbenzymesbarebusedbtobamplifybDNAbduringbPCR?
A.brestrictionbendonuclease
B.bDNAbpolymerase
C.breversebtranscriptase
D.bDNAbligaseb-bCorrectbAnswer-DNAbpolymerase
,Inbthebnitrogenbcycle,bwhichbofbthebfollowingbstepsbinvolvesbremovalbofbnitrogenbfrombthebat
mospherebbybbacteria?b-bCorrectbAnswer-
nitrogenbfixation,bInbnitrogenbfixation,bnitrogenbisbremovedbfrombthebatmospherebbybnitroge
n-fixingbbacteriabandbconvertedbtobammonia.
Ifbenoughbh+bionsbarebaddedbtobpurebwaterbtobraisebthebH+bconcentrationbofbthebsolutionbtob
tenbtimesbhigherbthanbtheboriginalbconcentration,bwhatbisbthebresultingbOH-
bconcentrationbofbthebsolution?b-bCorrectbAnswer-10b-8M
Fungibarebablebtobreproducebasexuallybbybcreatingbconidiosporesbandbsporangiospores.bW
hichbofbthebfollowingbisbanbaccuratebexplanationbforbwhybitbisbadvantageousbthatbtheybarebal
sobcapablebofbsexualbreproduction?
Selectbone:
a.bAsexuallybproducedboffspringbarebmoreblikelybtobcompetebforbresourcesbandbwillbkillboffbth
ebparentalbfungi.
b.bFungibnormallybproducebsexuallybbutbproducebasexuallybinbharshbconditionsbsuchbasbse
verebdrought.
c.bOffspringbfrombtwobparentsbmaybhavebvariationsbinbformbandbfunctionbthatbcontributebtobs
urvivalbofbthebspecies.
d.bSexualbreproductionbproducesbmoreboffspringbatbabfasterbratebthanbsporebformation.b-
bCorrectbAnswer-
Offspringbfrombtwobparentsbmaybhavebvariationsbinbformbandbfunctionbthatbcontributebtobsur
vivalbofbthebspecies.
Inbablaboratorybbacterialbcellbculturebthatbhasbbeenbinfectedbbybabvirus,bplaquesbarebareasbi
nbwhich
Selectbone:
a.bbacterialbcellsbarebresistantbtobthebvirusbandbhavebnotbbeenbinfected.
b.btherebisbnobnutrientbavailablebforbthebbacteriabtobgrow.
c.bthebvirusbhasbspreadbandbleftbbehindbthebremainsbofbdeadbcells.
d.bthebvirusbhasbnotbyetbspreadbtobthatbareabofbcells.b-bCorrectbAnswer-
thebvirusbhasbspreadbandbleftbbehindbthebremainsbofbdeadbcells.
Thebsun'sbenergybisbdeliveredbasbdiscretebpacketsbthatbtravelbasbwavesbandbarebcalled
Selectbone:
a.bATP.
b.bcarotenoids.
c.bNADP.
d.bphotons.b-bCorrectbAnswer-photons.
Whichbofbthebfollowingbisbabcharacteristicbofbaerobicbrespiration?
Selectbone:
a.bOxygen-containingbionsbactbasbthebfinalbelectronbacceptorsbinbelectronbtransport.
b.bThebprocessbincludesbglycolysis,bthebKrebsbcycle,bandbthebelectronbtransportbchain.
,Straighterline Micro 250 Final Prep Exam
b b b b b b
With 100% Correct And Verified Answers 2
b b b b b b
024
c.bAerobicbrespirationbproducesbabtotalbofb2bATPbmolecules.
d.bAerobicbrespirationbproducesblacticbacid.b-bCorrectbAnswer-
Thebthreebstagesbofbaerobicbrespirationbarebglycolysis,bthebKrebsbcycle,bandbthebelectronbtr
ansportbchain.
nbcompletingbproteinbsynthesisbinbabprokaryote,bwhatbbasicbmessagebisbcarriedbbybabspecia
lizedbcodonbthatbhasbnobcorrespondingbtRNA?
Selectbone:
a.b"Foldbpeptidebchain."
b.b"Terminatebhere."
c.b"Addbcofactor."
d.b"Clipbstartingbaminobacid."b-bCorrectbAnswer-
"Terminatebhere."bThebspecializedbcodonbsignalsbthebendbofbproteinbsynthesis;btherebisbnot
bRNAbbecausebitbisbonlybneededbifbthebprocessbisbtobcontinue.
Microbialbdrugbresistancebcanbbebcausedbbybmutationsborbbybintroductionbofbnewbgenesbint
obabpopulation.bWhichbofbthebfollowingbcanbonlybbebcausedbbybthebintroductionbofbnewbgene
sbintobabpopulation?
Selectbone:
a.babmetabolicbpathwaybinbthebbacteriumbisbshutbdown
b.bbindingbsitesbforbthebdrugbarebreducedbinbnumberborbaffinitybtobthebdrug
c.bnewbenzymesbthatbinactivatebthebdrugbarebsynthesized
d.buptakebofbthebdrugbintobthebbacteriumbisbdiminishedb-bCorrectbAnswer-
newbenzymesbthatbinactivatebthebdrugbarebsynthesized.bThisbcanbonlyboccurbifbnewbgenesba
rebintroducedbintobthebpopulation.
Whybdobthebhands,bfeet,bandbbreastsbhavebmoreblymphaticbvesselsbforbhostbdefensebthanbo
therbareasbofbthebhumanbbody?
Selectbone:
a.bTheybhavebabhighbriskbforbinfectionbduebtobfrequentbcontact.
b.bTheybhavebabgreaterbdensitybofbnerves.
c.bTheybrequirebcomplexbmovementbofbfluidsbfrombthebextremities.
d.bTheybareblocatedbablongbdistancebfrombthebthalamus.b-bCorrectbAnswer-
Theybhavebabhighbriskbforbinfectionbduebtobfrequentbcontact.
Penicillinbfunctionsbasbanbantimicrobialbagentbbybinhibitingbbacterial
Selectbone:
a.bcellbwallbsynthesis.
b.bfolicbacidbsynthesis.
c.bproteinbsynthesis.
d.bRNAbandbDNAbfunction.b-bCorrectbAnswer-
cellbwallbsynthesis.bPenicillinbbelongsbtobabclassbofbantibacterialbagentsbthatbinterferebwithbt
, hebproductionbofbthebmaterialbthatbmakesbupbthebbacterialbcellbwall.bThebbacteriabmustbcons
tantlybreplacebthisbmaterialborbtheybwillbbecomebsusceptiblebtobrupturebduebtobosmoticbpres
sure.
Ifbenoughbionsbarebaddedbtobpurebwaterbtobraisebthebconcentrationbofbthebsolutionbtobtenbtim
esbhigherbthanbtheboriginalbconcentration,bwhatbisbthebresultingbconcentrationbofbthebsolutio
n?b-bCorrectbAnswer-
Thebstudybofbevolutionarybrelationshipsbamongborganismsbisbcalledb-bCorrectbAnswer-
phylogeny
Thebthreebcellbtypesbdiscussed,beukaryotes,barchaea,bandbbacteria,ballbderivedbfromb-
bCorrectbAnswer-LastbUniversalbCommonbAncestor
Organismsbcalledbparasitesbareb-bCorrectbAnswer-alwaysbharmfulbtobtheirbhost.
Whichbofbthebfollowingbdoesbnotbindicatebmicrobebinvolvementbinbenergybandbnutrientbflowb-
bCorrectbAnswer-Thermalbhotbspringsbwarmedbbybheatbfrombearth'sbinterior
Thebsubatomicbparticlesbthatbsurroundbthebnucleusbarebtheb-bCorrectbAnswer-Electrons
Thebnumberbonebworldwidebinfectiousbdiseasesbareb-bCorrectbAnswer-
respiratorybdiseases
Abfatbisbcalledb_____bifballbcarbonsbofbthebfattybacidbchainbarebsingle-
bondedbtob2botherbcarbonsbandb2bhydrogens.b-bCorrectbAnswer-saturated
OnebtechniquebforbstainingbbacteriabforbviewingbunderbthebmicroscopebisbcalledbthebGrambs
tain.bInbthisbtechnique,balcoholbisbusedbasbabdecolorizerbbecausebitbdegradesbthebouterbme
mbranebfoundbinbsomebbacteria.bWhatbchemicalbcomponentbofbthebcellbdoesbalcoholbaffect
?b-bCorrectbAnswer-lipid
Ifbabmicrobiologistbisbstudyingbabspecimenbatbabtotalbmagnificationbofb950X,bwhatbisbthebma
gnifyingbpowerbofbthebobjectiveblensbifbthebocularblensbisb10X?b-bCorrectbAnswer-95X
NASAbhasbpublishedbablistbofbcriteriabforbidentifyingbfossilbbacteriabinbsamplesbfrombMars,ba
sbpartbofbabsearchbforbevidencebofblife.bWhichbofbthebfollowingbisbgoodbevidencebforbthebpres
encebofbbacterialbcells?b-bCorrectbAnswer-cellbsizebofb0.5btob2bmicrons
Whichbtypebofbmicroscopebachievesbthebgreatestbresolutionbandbhighestbmagnification?b-
bCorrectbAnswer-electron
Whichbofbthebfollowingbisbproducedbbybaddingb1%btob5%bagarbtobnutrientbbrothbthatbisbthenb
boiledbandbcooled?b-bCorrectbAnswer-absolidbmedium
abspongiformbencephalopathybofbhumansb-bCorrectbAnswer-Creutzfeldt-Jacobbdisease
