BSC 108 EXAM 3 KENNEDY RESULTS.

Bsc 108 Exam 3 Kennedy n n n n




Results n




The hstructure hof ha hstrand hof hDNA. h- h hcorrect hanswer- hit his ha hdouble hhelix, hlike ha
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htwisted hladder.
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the hladder hrings hare hnucleotide hsubunits hand hthey hhave ha hcovalent hbond hto hthe
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hsugar hphosphate hbackbone h(made hof hdeoxyribose hand ha hphosphate hgroup)
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n hWhat hare hthe hnucleotide hsubunits? h- h hcorrect hanswer- hadenine, hguanine, hcytosine,
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hand hthymine
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n hHow hare hthe hsubunits hheld htogether? h- h hcorrect hanswer- hthrough ha hhydrogen
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hbond
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n hWhat hare hthe hnucleotide hsubunits hcompliments? h- h hcorrect hanswer- hAdenine hand
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hthymine h
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cytosine hand hguanine n n




n hHow hdoes hDNA hreplicate? h- h hcorrect hanswer- hthe hparent hstrand hbreaks hoff hinto
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htwo hand hthen henzymes h(DNA hpolymerases) hattach hthe hcomplimentary hnucleotide
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hto heach hside, hcreating htwo hseparate hdaughter hstrands
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n hWhat his hthe hlocation hsite hof hwhere hDNA hreplication hbegins hon hthe hdouble hhelix
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hcalled? h- h hcorrect hanswer- hthe horigins hof hreplication
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n hWhat his hcreated hwhen hreplication hproceeds hin hboth hdirections? h- h hcorrect hanswer-
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hreplication hbubbles, hthey hare hcreated hbecause hat hthe horigin hthe hreplication hprocess
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hproceeds hin hother hdirections, hcreating ha hbubble.
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n hWhat his hthe hreplication hforks? h- h hcorrect hanswer- hIt his hthe hlocation hwhere hthe
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hparent hcells his hseparating hand hthe hcomplimentary hnucleotide his hbeing hadded
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hcreating hthe htwo hnew hstrands
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, n hHow hdoes hDNA hdetermine hspecific htraits h(phenotypes)? h- h hcorrect hanswer-
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hPhenotypes harise hfrom hthe hactions hof ha hwide hvariety hof hproteins. hTo hget hthese
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hproteins hthis his hwhat hhappens. hDNA htransfers hgenetic hinformation hthrough
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htranscription hto hRNA. hThen hthrough htranslation hgenetic hinfo his htransferred hfrom
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hRNA hinto ha hpolypeptide h(protein hstrand)
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n hWhat his hthe hstructure hof hRNA? h- h hcorrect hanswer- hIt his ha hsingle-stranded hnucleic
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hacid.
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it his hthe hsame has hDNA hexcept hit huses hribose hinstead hof hdeoxyribose hin hthe hsugar
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hphosphate hbackbone hand hit huses huracil hinstead hof hthymine
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n htRNA h- h hcorrect hanswer- htransfer hRNA: htranslation hof hthe hgenetic hmessage hcarried
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hin hthe hmRNA hinto hthe hamino hacid hlanguage hof hproteins h(converts hthe hthree-letter
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hwords, hcodons, hof hnucleic hacids hto hthe hamino hacid hwords hof hproteins)
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n hWhat his hthe hfunction hof hmRNA? h- h hcorrect hanswer- hMessenger hmolecules hcarry
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hthe hcoding hsequences hfor hprotein hsynthesis hand hare hcalled htranscripts.
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n hrRNA h- h hcorrect hanswer- hribsosomal hRNA
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makes hup hribosomes hwhich hare hthe horganelles hin hthe hcytoplasm hthat hcoordinate
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hthe hfunctioning hof hmRNA hand htRNA hand hactually hmake hpolypeptides
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n hWhat htwo hprocesses hdo hgenes hcode hfor hspecific hproteins? h- h hcorrect hanswer-
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htranscription hand htranslation
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n hWhat his htranscription hand hwhere hdoes hit htake hplace? h- h hcorrect hanswer-
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hTranscription his hthe hsynthesis hof hmRNA hunder hthe hdirection hof hDNA, hnucleus
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n hWhat his htranslation hand hwhere hdoes hit htake hplace? h- h hcorrect hanswer- hIt his hthe
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hsynthesis hof ha hpolypeptide h(later hbecomes ha hprotein) hunder hthe hdirection hof
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hmRNA
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occurs hon hribosomes hin hthe hcytoplasmn n n n n




n hWhat his hthe hstructure hof htRNA? h- h hcorrect hanswer- hIt his hmade hof ha hsingle hstrand
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hof hRNA. hconsisting hof habout h80 hnucleotides. hChain htwists hand hfolds hupon hitself,
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hforming hseveral hdouble-stranded hregions hin hwhich hshort hstretches hof hRNA hbase-
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pair hwith hother hstretches. hone hend hhas ha hspecial htriplet hof hbases hcalled hanticodons.
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hit his hcomplementary hto ha hcodon htriplet hon hmRNA. hon hthe hother hside hthere his han
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hamino hacid hattachment hsite.
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n hWhat his ha hmutation? h- h hcorrect hanswer- hIt his ha hchange hin hthe hgenetic hmaterial
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h(the hnucleotide hsequence) hof ha hcell's hDNA.
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n hWhat his ha hpoint hmutation? h- h hcorrect hanswer- hIt his ha hchange hin honce hbase hpair
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hof ha hgene.
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