Molecular Biology of the Cell 7th Edition Solution Manual | Answer Key PDF Download

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MOLECULAR BIOLOGY OF THE CELL, SEVENTH
J J J J J J


EDITION SOLUTION MANUAL J J



CHAPTER 1:CELLS AND GENOMES
J J J




1. ScientistsJdiscoverJmoreJthanJtenJthousandJnewJspeciesJofJlivingJorganismsJeveryJyear.J
WhatJisJsharedJbetweenJallJofJtheseJorganisms?
A. TheyJareJmadeJofJcells,JwhoseJnucleiJencloseJtheirJDNA.

B. TheyJobtainJtheirJenergyJfromJsunlight.

C. TheyJproduceJandJuseJadenosineJtriphosphateJ(ATP).

D. TheirJgenomeJcontainsJatJleastJ1000Jgenes.

E. AllJofJtheJabove.



2. AllJcellsJ…
A. haveJmembraneJtransportJproteins.

B. synthesizeJproteinsJonJtheJribosome.

C. replicateJtheirJgenomeJbyJDNAJpolymerization.

D. transcribeJtheirJgeneticJinformationJbyJRNAJpolymerization.

E. AllJofJtheJabove.



3. ImagineJaJsegmentJofJDNAJ(withinJaJgene)JencodingJaJcertainJamountJofJinformationJinJ
itsJnucleotideJsequence.JWhenJthisJsegmentJisJfullyJtranscribedJintoJmRNAJandJthenJtranslatedJi
ntoJprotein,JinJgeneral,J…
A. theJproteinJsequenceJwouldJcarryJmoreJinformationJcomparedJtoJtheJDNAJandJmRNAJ
sequences,JbecauseJitsJalphabetJhasJ20Jletters.
B. theJproteinJsequenceJwouldJcarryJlessJinformationJcomparedJtoJtheJDNAJandJmRNAJ
sequences,JbecauseJseveralJcodonsJcanJcorrespondJtoJoneJaminoJacid.

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C. theJamountJofJinformationJinJtheJmRNAJsequenceJisJlower,JbecauseJtheJmRNAJhasJ
beenJtranscribedJusingJonlyJoneJofJtheJDNAJstrandsJasJtheJtemplate.

D. theJamountJofJinformationJinJtheJmRNAJsequenceJisJhigher,JbecauseJseveralJmRNAJ
moleculesJcanJbeJtranscribedJfromJoneJDNAJmolecule.



4. WhichJofJtheJfollowingJprocessesJthatJhappensJinsideJaJcellJDOESJNOTJnormallyJrequireJ
consumptionJofJfreeJenergyJbyJtheJcell?
A. ReplicationJofJtheJgeneticJmaterial

B. ImportJofJnutrientsJfromJtheJenvironment

C. DiffusionJofJsmallJmoleculesJwithinJtheJcell

D. RegulationJofJgeneJexpression

E. SynthesisJofJenzymesJthatJcatalyzeJcellularJreactions


5. WhichJofJtheJfollowingJwouldJyouJNOTJexpectJtoJfindJinJaJbacterialJcell?

A. SwimmingJusingJflagella

B. HavingJaJcellJwallJaroundJtheJplasmaJmembrane

C. ATPJproductionJinJmitochondria

D. ProteinJproductionJonJtheJribosome

E. SexualJexchangeJofJDNAJwithJotherJbacteria


6. ToJtraceJfamilyJrelationshipsJbetweenJdistantlyJrelatedJorganismsJsuchJasJhumans,Jalgae,J
bacteria,JandJarchaea,JoneJshouldJcompareJtheirJgenomesJinJregionsJ…
A. thatJevolveJrapidly.

B. thatJhaveJaJhigherJmutationJrate.

C. thatJcodeJforJproteins.

D. whereJmutationsJareJhardlyJtolerated.

E. whereJmostJmutationsJareJselectivelyJneutral.

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7. LaboratoryJstrainsJofJtheJmodelJorganismJEscherichiaJcoliJthatJareJresistantJtoJantibioticsJ
areJveryJoftenJusedJinJresearchJlaboratoriesJasJwellJasJinJtheJbiotechnologyJindustry.JIfJculturesJofJ
suchJbacteriaJwereJallowedJtoJcontaminateJtheJenvironmentJuncontrollably,JitJisJpossibleJthatJatJso
meJpoint,JpathogenicJbacteriaJsuchJasJNeisseriaJmeningitidisJ(whichJcausesJmeningitisJandJcanJca
useJdeath,JespeciallyJinJchildren)JcouldJacquireJtheJsameJantibiotic-
resistanceJgene,JcausingJaJmeningitisJoutbreakJthatJisJdifficultJtoJtreat.JInJthisJscenario,JwhichJofJt
heJfollowingJmechanismsJisJaJmoreJlikelyJsourceJofJtheJantibiotic-
resistanceJgeneJinJN.Jmeningitidis?
A. RandomJnewJgeneJgeneration

B. IntragenicJmutation

C. GeneJduplication

D. DNAJsegmentJshuffling

E. HorizontalJgeneJtransfer


8. AJvirusJ…

A. isJaJtypeJofJcell.

B. hasJgeneticJmaterialJmadeJofJproteins.

C. canJonlyJinfectJaJsingleJhostJspecies.

D. canJactJasJaJvectorJforJgeneJtransfer.

E. cannotJpersistJinJitsJhostJforJmoreJthanJoneJcellJgeneration.


9. WhichJofJtheJfollowingJdoesJNOTJtypicallyJinvolveJhorizontalJgeneJtransfer?

A. SexualJreproductionJinJhumans

B. BacteriophageJinfectionJofJbacteria

C. TheJevolutionaryJhistoryJofJtheJeukaryoticJcell

D. TheJaccidentalJduplicationJofJaJsmallJregionJofJaJbacterialJchromosomeJfollowedJbyJ
cellJdivision
E. IntroductionJofJplasmidsJintoJbacteriaJinJaJlaboratory



10. GeneJduplicationJcanJgiveJriseJtoJhomologousJgenesJthatJareJpartJofJgeneJfamilies.JForJ
example,JthereJareJsixJactinJgenesJinJtheJgenomeJofJmostJmammalianJspecies.JInJhumans,Jthe

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ACTBJgene,JwhichJencodesJaJcytoskeletalJactin,JisJexpressedJubiquitously,JwhileJACTC1JisJexpre
ssedJmainlyJinJcardiacJcells.JAlthoughJbacteriaJlackJtheJeukaryoticJcytoskeletalJorganization,JtheJ
bacterialJMreBJgeneJbearsJrecognizableJsequenceJsimilarityJtoJmammalianJactinJgenesJandJcodesJf
orJaJproteinJthatJisJsimilarJtoJactinJinJstructureJandJfunction.JWhichJofJtheJfollowingJstatementsJisJ
trueJaboutJtheseJgenes?
A. ACTBJisJhomologousJtoJACTC1JbutJnotJtoJMreB.

B. ACTBJisJorthologousJtoJACTC1JbutJnotJtoJMreB.
C. ACTBJisJparalogousJtoJACTC1JbutJnotJtoJMreB.

D. MreBJisJorthologousJtoJACTBJbutJnotJtoJACTC1.

E. ACTBJisJparalogousJtoJbothJACTC1JandJMreB.



11. OutJofJnearlyJ5000Jprotein-
codingJgeneJfamilies,JthereJisJaJsetJofJnearlyJ300JconservedJgeneJfamiliesJthatJareJfoundJinJspec
iesJfromJallJdomainsJofJlife.JWhenJoneJlooksJatJtheJgeneralJfunctionsJassignedJtoJtheseJgeneJfa
milies,JitJisJfoundJthatJ…
A. theJmajorityJofJthemJfunctionJinJcell-to-cellJsignaling.

B. theJmajorityJofJthemJareJpoorlyJcharacterized.

C. moreJthanJone-
thirdJofJthemJareJinvolvedJinJtranslationJorJaminoJacidJtransportJandJmetabolism.
D. moreJthanJone-
halfJofJtheJsharedJfamiliesJareJinvolvedJinJDNAJreplicationJandJtranscription.
E. NearlyJallJofJthemJareJinvolvedJinJenergyJproductionJandJcarbohydrateJmetabolism.



12. WhichJofJtheJfollowingJisJtrueJregardingJEscherichiaJcoli?

A. MostJofJourJunderstandingJaboutJmitosisJcomesJfromJstudiesJonJthisJmodelJorganism.
B. ItJisJaJrod-
shapedJbacteriumJthatJcanJonlyJgrowJinJtheJgutJofJhumansJandJotherJvertebrates
.
C. TwoJstrainsJofJE.JcoliJcanJdifferJbyJupJtoJ0.1%JinJtheirJgenomes.

D. E.JcoliJstrainJK-12JencodesJaboutJ4300Jproteins.
E. TheJE.JcoliJ(strainJK-12)JgenomeJisJaboutJ430JmillionJnucleotideJpairsJlong.