Dr. Al Microbiology Exam 3

Dr. Al Microbiology Exam 3 Questions
And Correct Update


genetics m- mAnswer m- mthe mstudy mof mwhat mgenes mare, mhow mthey mcarry minformation, mhow
minformation mis mexpressed, mand mhow mgenes mare mreplicated




chromosome m- mAnswer m- mstructure mcontaining mDNA mthat mphysically mcarries mhereditary
minformation; mthe mchromosomes mcontain mthe mgenes




genome m- mAnswer m- mall mthe mgenetic minformation min ma mcell



genomics m- mAnswer m- mthe mmolecular mstudy mof mgenomes



genotype m- mAnswer m- mthe mgenes mof man morganism



phenotype m- mAnswer m- mexpression mof mthe mgenes



gene m- mAnswer m- ma msequence mof mnucleotides min mDNA mtat mcodes mfor ma mfunctional mproduct



operon m- mAnswer m- mset mof mgenes mtranscribed mtogether minto ma msingle mmRNA mthat mcodes
mfor mmultiple mproteins mrequired min mthe msame mmetabolic mpathway




central mdogma m- mAnswer m- mDNA m-> mRNA m-> mProtein



genetic mcode m- mAnswer m- mset mof mrules mthat mdetermines mhow ma mnucleotide msequence mis
mconverted mto man mamino macid msequence mof ma mprotein




DNA m- mAnswer m- mdeoxyribonucleic macid

,components mof mDNA m- mAnswer m- mdeoxyribose m(sugar), mphosphate, mnitrogenous mbases



nitrogenous mbases m- mAnswer m- mAdenine, mThymine, mCytosine, mGuanine



nucleotide m- mAnswer m- msugar m+ mphosphate m+ mbase



nucleoside m- mAnswer m- msugar m+ mbase

incomplete m(missing mphosphate)



double mhelix m- mAnswer m- mstructure mof mDNA



antiparallel m- mAnswer m- mDNA mis mconstructed mof mtwo mstrands mof mnucleotides mrunning
m________________




bidirectional m- mAnswer m- mmost mbacterial mDNA mreplication mis m______________________



one m- mAnswer m- meach moffspring mcell mreceives m________ mcopy mof mthe mDNA mmolecule



DNA mpolymerase m- mAnswer m- mreplication mis mhighly maccurate mdue mto mthe mproofreading
mcapability mof m________ m____________________




semiconservative m- mAnswer m- mbecause ma mnewly msynthesized mna mmolecule mconsists mof mone
mold mstrand mand mone mnew mstrand, mDNA mreplication mis mdescribed mas
m______________________




backbone mof mDNA m- mAnswer m- m_____________________________ mconsists mof mdeoxyribose-
phosphate



hydrogen mbonds m- mAnswer m- mtwo mstrands mof mnucleotides mare mheld mtogether mby mhydrogen
mbonds mbetween mA-T mand mC-G

, genetic minstructions m- mAnswer m- morder mof mthe mnitrogen mcontaining mbases mforms mthe
m__________ m______________ mof mthe morganism




origin; mtermination m- mAnswer m- mreplication mof mDNA mbegins mat mthe m___________ mof
mreplication mand mends mat mthe m____________ mof mreplication




template m- mAnswer m- mone mstrand mof mDNA mserves mas ma m___________ mfor mthe mproduction
mof mthe msecond mstrand




topoisomerase; mgyrase m- mAnswer m- mWhich mtwo menzymes mrelax mthe mstrands mof mDNA mduring
mreplication?




helicase m- mAnswer m- mAn menzyme mthat muntwists/separates mthe mdouble mhelix mof mDNA



step m1 mof mDNA mreplication m- mAnswer m- mDNA mhelicase mseparates mDNA mstrands



step m2 mof mDNA mreplicaiton m- mAnswer m- msingle-stranded mbinding mproteins mbind mto mstrands
mof mDNA mto mkeep mthem mfrom mre-pairing




step m3 mof mDNA mreplication m- mAnswer m- mprimase msynthesizes mshort mRNA mprimer mto mprovide
mattachment mpoint mfor mDNA mpolymerase




step m4 mof mDNA mreplication m- mAnswer m- mDNA mpolymerase madds mnucleotides maccording mto
mbase-pairing mrules




step m5 mof mDNA mreplication m- mAnswer m- mleading mstrand mcontinually msynthesized; mlagging
mstrand msynthesized min mOkazaki mfragments




step m6 mDNA mreplication m- mAnswer m- mOkazaki mfragments mjoined mby mligase



DNA mfunctions m- mAnswer m- mcontains mgenetic mprofile mof mcell