双语分子生物学复习资料

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1、1.（核酸性质—减色性，双链DNA，单链DNA,寡核苷酸）Whichhasthehighestabsorptionperunitmassatawavelengthof260nm?(B)ARNA.Bmononucleotides.Cdouble-strandedDNA.Dprotein.减色性跟紫外最大吸收峰Nucleotides（260）〉RNA〉ssDNA>double-strandedDNA4.（RNA的转录时，DNA的模板链和编码链（有义链和反义链））mRNA互补（）的链是模板链（或称反义链，与反义链互补的是有义链）。Theseq

2、uence5’-AGTCTGACT-3’inDNAisequivalenttowhichsequenceinRNA?(C)——给你DNA序列，找到对应的RNA序列，给你RNA序列，找到对应的DNA序列。A5’-AGUCUGACU-3’B5’-UGTCTGUCT-3’C5’-UCAGUCUGA-3’D5’-AGUCAGACU-3’DNA双链维持的结构是什么？AH-bondsanddisulfidebonds（二硫键）Bbasestackinginteraction（碱基堆积力）andpeptidebondsChydrophobicinte

3、raction（疏水相互作用）andH-bondsDbasestackinginteractionandhydrophobicinteraction碱基堆积和疏水相互作用10.Whichoneoffollowingstatementsabouttelomere（端粒）andteromerase（端粒酶）isfalse?(B)ATelomerecontainsuptohundredscopiesofashortrepeatedsequence.BTeromeraseisatypicalDNApolymerase.（端粒酶不是经典的DNA聚

4、合酶）CTheactivitiesoftelomerasearerelatedtothedevelopmentstagesandtissuetypes.DThetelomereissynthesizedbytheenzymetelomeraseandDNApolymerase.11.Whichoneofthefollowingstatementsabouttelomere（端粒）andtelomerase（端粒酶）istrue?(C)（概念）ATheactivityoftelomeraseisverylowincancerandgerm

5、cell.BTelomereislongstretchesattheendsofthechromosomeandrichinG-C.CTelomeraseisthereversetranscriptaseresponsiblefortheextensionoftelomericrepeatDTelomeraseiscomplexofDNA,proteinandRNA.8种必须氨基酸14.Whichisthemajorforcesbetweentheaminoacidsinthepolypeptides(多肽链)?()AH-bondsan

6、ddisulfidebonds（二硫键）Bbasestackinginteraction（碱基堆积力）Chydrophobicinteraction（疏水相互作用）Dpeptidebonds（肽键）核酸是3，5磷酸二酯键21.WhichoneofthefollowingstatementsaboutDNAsecondarystructureisnottrue?(D)AThebasicfeaturesofDNAdoublehelixwerededucedbyJamesD.WatsonandFrancisCrickin1953l.BThes

7、tructureidentifiedbyJamesD.WatsonandFrancisCrickisknownasB-formDNAwhichisright-handedform（右手螺旋）.CUnderconditionsoflowhumidity,DNAcanbeinducedtoformA-formDNA.DZ-formDNAisright-handedliketheB-formDNA.（是左手）Forexample:telomerereplication端粒复制41．bpbasepairs碱基对2．GMOGeneticallym

8、odifiedorganism基因修饰生物3．TheapproximatepurityofdsDNApreparationsmaybeestimatedbydeterminationoftheratioof