生物化学英文版题库与答案

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1、195Chapter1Biochemistry:AnEvolvingScienceMatchingQuestionsUsethefollowingtoanswerquestions1-10:Choosethecorrectanswerfromthelistbelow.Notalloftheanswerswillbeused.a)uridineb)truec)DGd)thyminee)DHf)sugar-phosphateunitsg)covalenth)Archaeai)entropyj)systemk)3l)2m)false1.DNAismadefromthebuildingblocksa

2、denine,guanine,cytosine,and____________.Ans:dSection:  1.22.TheDNAbackboneismadefromrepeating____________.Ans:fSection:  1.23.____________ThenumberofhydrogenbondsformedbetweenAandT.Ans:lSection:  1.24.____________ThenumberofhydrogenbondsformedbetweenGandC.Ans:kSection:  1.25.Thefundamentalgroupsofo

3、rganismsincludeEukarya,Bacteria,and____________.Ans:hSection:  1.11956.____________Thestrongestbondsinmolecules:Ans:gSection:  1.37.____________Hydrogenbondsareusuallystrongerthancovalentbonds(true/false).Ans:bSection:  1.38.____________Matterwithinadefinedregionofspace.Ans:jSection:  1.39.________

4、____ForspontaneousreactionstheDGmustbepositive.Ans:mSection:  1.310.____________Gibbsfreeenergy.Ans:cSection:  1.3MultipleChoiceQuestions11.ThestructureofDNAdescribedbyWatsonandCrickincludedA)adoublehelix.B)thesugarphosphatebackbonealignedinthecenterofthehelix.C)thebasepairsthatarestackedontheinsid

5、eofthedoublehelix.D)aandb.E)aandc.Ans:  ESection:  1.212.WhatdidWatsonandCricksuggesttobesignificantaboutthebasepairingfoundinthehelix?A)ItallowedtheDNAtotwistinahelix.B)TheDNAcouldbecircular.C)Itwasamechanismforcopying.D)Alloftheabove.E)Noneoftheabove.Ans:  CSection:  1.319513.Approximatelywhatper

6、centageofthehumangenomeencodesforproteins?A)50%B)90%C)10%D)3%E)Noneoftheabove.Ans:DSection1.414.Whatgivesproteinssuchadominantroleinbiochemistry?A)thevariationinproteinsizesB)theabilitytoactasablueprintC)theirabilitytoself-replicateD)theirabilitytospontaneouslyfoldintocomplexthree-dimensionalstruct

7、uresE)Alloftheabove.Ans:  DSection:  1.415.Ifthewholechainisusedinanon-overlappingframe,howmanyaminoacidsaredefinedbythisDNAsequence:ATGTTTGGACTA?A)fourB)twoC)twelveD)sixE)threeAns:  ASection:  1.416.Whatis