Test2McGraw-HillMicrobiology
Chapter8&9examwithcorrect
answers
A(n)___________isachangeinthenucleotidesequence ofDNAthatispassedontodaughtercells.-
correct answer✔✔Mutation
In__________genetransfer,DNAmovesfromoneorganismtoanother,whilein__________ gene
transfer,DNAispassedfromaparentcell toitsprogeny.-correct answer✔✔Horizontal-Vertical
Anorganismthathasamutationiscalleda________ -correct answer✔✔mutant
Organismsmostfittosurvive inagivenenvironmentwillpredominatebecausetheycanreproduce
morerapidlythanothers.Thisphenomenoniscalled__________________________.-correct
answer✔✔natural selection
Whichofthefollowingtermsdescribesthesequence ofnucleotides(geneticmakeup)ofanorganism
oracell?
-Phenotype
-Serotype
-Genotype
-Haplotype -correct answer✔✔Genotype
Bacteriaareagreatmodelsystemforgenetic studiesbecausewhentheyaregrowntoveryhigh
numbersinsmallvolumesofsimple media______.
,-thebacteriadivideindefinitelysothepopulationnumberremainsconstant
-raregenetic changesthathappencanbeeasilystudied
-thegenetic makeupofthepopulationisverystableandnevermutates-correct answer✔✔-rare
genetic changesthathappencanbeeasilystudied
*Selectallthatapply*
Genetic changeinbacteriaoccursthroughwhichtwomechanisms?
-mutation
-verticalgenetransfer
-horizontal genetransfer-correct answer✔✔-mutation
-horizontal genetransfer
Whichofthefollowingdescribesanorganism'sobservable characteristics?
-Serotype
-Genotype
-Phenotype
-Haplotype -correct answer✔✔-Phenotype
Trueorfalse:
Vertical genetransferisthetransferofgenesfromoneorganismtoanotherinapopulation,while
horizontalgenetransferisthetransferofgenesfromparentcelltoprogeny.-correct answer✔✔False
Whichtermreferstoanorganismthathasamutation?
,-Mutant
-Wildtype
-Mutagen-correct answer✔✔-Mutant
The___________isthenucleotidesequence intheDNAofacelloranorganism.-correct
answer✔✔genotypeorgenome
BacteriasuchasE.coliareanexcellentmodelsystemforgeneticsstudiesbecausetheycanquicklygrow
tohighdensities, allowingustoscreenforraregeneticevents.Thesecangiverise todifferent
__________,whicharegenetic variantswithinaspecies.-correct answer✔✔strains
Trueorfalse:
Thenativeorwildtypestraindescribes thetypical phenotypeofstrainsisolatedfromnature.-correct
answer✔✔True
The_______istheobservedcharacteristics ofanorganism.-correct answer✔✔phenotype
Amutantthatrequiresagrowthfactorisa(n)______.
-heterotroph
-autotroph
-auxotroph
-prototroph
-phototroph-correct answer✔✔-auxotroph
, Anorganismthathasthesamenutritionalrequirementasthewildtypeissaidtobea(n)______.
-heterotroph
-autotroph
-auxotroph
-prototroph
-phototroph-correct answer✔✔prototroph
Whichofthefollowingtermsdescribesthesequence ofnucleotides(geneticmakeup)ofanorganism
oracell?
-Serotype
-Phenotype
-Haplotype
-Genotype-correct answer✔✔Genotype
Ifascientist isworkingwithbacteriathathavethetypical phenotypeofthoseisolatedfromnature,the
bacteriaareconsideredtobe______type.
wild
natural
normal -correct answer✔✔wild
Thenativeor_________ _______ straindescribescellsthatcarrynon-mutatedDNA.-correct
answer✔✔wildtype
Randomgeneticchangesthatresultfromnormalcellular processesare______.
Chapter8&9examwithcorrect
answers
A(n)___________isachangeinthenucleotidesequence ofDNAthatispassedontodaughtercells.-
correct answer✔✔Mutation
In__________genetransfer,DNAmovesfromoneorganismtoanother,whilein__________ gene
transfer,DNAispassedfromaparentcell toitsprogeny.-correct answer✔✔Horizontal-Vertical
Anorganismthathasamutationiscalleda________ -correct answer✔✔mutant
Organismsmostfittosurvive inagivenenvironmentwillpredominatebecausetheycanreproduce
morerapidlythanothers.Thisphenomenoniscalled__________________________.-correct
answer✔✔natural selection
Whichofthefollowingtermsdescribesthesequence ofnucleotides(geneticmakeup)ofanorganism
oracell?
-Phenotype
-Serotype
-Genotype
-Haplotype -correct answer✔✔Genotype
Bacteriaareagreatmodelsystemforgenetic studiesbecausewhentheyaregrowntoveryhigh
numbersinsmallvolumesofsimple media______.
,-thebacteriadivideindefinitelysothepopulationnumberremainsconstant
-raregenetic changesthathappencanbeeasilystudied
-thegenetic makeupofthepopulationisverystableandnevermutates-correct answer✔✔-rare
genetic changesthathappencanbeeasilystudied
*Selectallthatapply*
Genetic changeinbacteriaoccursthroughwhichtwomechanisms?
-mutation
-verticalgenetransfer
-horizontal genetransfer-correct answer✔✔-mutation
-horizontal genetransfer
Whichofthefollowingdescribesanorganism'sobservable characteristics?
-Serotype
-Genotype
-Phenotype
-Haplotype -correct answer✔✔-Phenotype
Trueorfalse:
Vertical genetransferisthetransferofgenesfromoneorganismtoanotherinapopulation,while
horizontalgenetransferisthetransferofgenesfromparentcelltoprogeny.-correct answer✔✔False
Whichtermreferstoanorganismthathasamutation?
,-Mutant
-Wildtype
-Mutagen-correct answer✔✔-Mutant
The___________isthenucleotidesequence intheDNAofacelloranorganism.-correct
answer✔✔genotypeorgenome
BacteriasuchasE.coliareanexcellentmodelsystemforgeneticsstudiesbecausetheycanquicklygrow
tohighdensities, allowingustoscreenforraregeneticevents.Thesecangiverise todifferent
__________,whicharegenetic variantswithinaspecies.-correct answer✔✔strains
Trueorfalse:
Thenativeorwildtypestraindescribes thetypical phenotypeofstrainsisolatedfromnature.-correct
answer✔✔True
The_______istheobservedcharacteristics ofanorganism.-correct answer✔✔phenotype
Amutantthatrequiresagrowthfactorisa(n)______.
-heterotroph
-autotroph
-auxotroph
-prototroph
-phototroph-correct answer✔✔-auxotroph
, Anorganismthathasthesamenutritionalrequirementasthewildtypeissaidtobea(n)______.
-heterotroph
-autotroph
-auxotroph
-prototroph
-phototroph-correct answer✔✔prototroph
Whichofthefollowingtermsdescribesthesequence ofnucleotides(geneticmakeup)ofanorganism
oracell?
-Serotype
-Phenotype
-Haplotype
-Genotype-correct answer✔✔Genotype
Ifascientist isworkingwithbacteriathathavethetypical phenotypeofthoseisolatedfromnature,the
bacteriaareconsideredtobe______type.
wild
natural
normal -correct answer✔✔wild
Thenativeor_________ _______ straindescribescellsthatcarrynon-mutatedDNA.-correct
answer✔✔wildtype
Randomgeneticchangesthatresultfromnormalcellular processesare______.
