BCH 367 Exam 1 Review Questions And Answers

BCH 367 Exam 1 Review Questions And
Answers
_____rDNArisrtightlyrboundrtorhistonesr-rCORRECTrrANSWER-Eukaryotic

_________r_______rarerformedrfromrpairsrofrallrtherhistonesrexceptrforr______r-
rCORRECTrrANSWER-Histoneroctamersr;rH1




_________rarerRNArmoleculesrthatrcanrperformrcatalysisr-rCORRECTrrANSWER-
Ribozymes

___________rarerformedrfromrhistoneroctamersrweappedrwithrDNAr-
rCORRECTrrANSWER-Nucleosomes




____________risrtherentirercomplexrofrDNArandrhistonesrwithinrthercellr-
rCORRECTrrANSWER-Chromatin




(T/F)rAminoracidsrarerchiralr-rCORRECTrrANSWER-True

(T/F)rAminorAcidsrarerZwitterionsr-rCORRECTrrANSWER-True

(T/F)rBothrminorrandrmajorrgroovesrproviderH-
bondrdonorsrandracceptorsrtorinteractrwithrDNA-bindingrproteinsr-rCORRECTrrANSWER-T

(T/F)rEachrnewyrmisfoldedrprionrcanrconvertrotherrnormalrproteinsrcausingrarchainrreactionr
andrexponentialramplificationr-
>rtherendrresultsrarerproteinraggregatesrthatrimpederbrainrfunctionr-rCORRECTrrANSWER-
T

(T/F)rEachrpolypeptiderchainrhasrardirectionalityrsinceritsrendsrarerdifferentr(directionalityr=r
polarity)r-rCORRECTrrANSWER-T

(T/F)rEachrproteinrhasrarwell-definedraminoracidrsequencerspecifiedrbyrargener-
rCORRECTrrANSWER-T




(T/F)rEssentiallyrallralpharhelicesrarerrightrhandedr(ProteinrSecondaryrStructure)r-
rCORRECTrrANSWER-T

, (T/F)rHydrogenrbondsrarerlongerrthanrcovalentrbondsr-rCORRECTrrANSWER-True

(T/F)rHydrogenrbondsrarermuchrweakerrthanrcovalentrbondsr-rCORRECTrrANSWER-True

(T/F)rInrarbetarsheet,rstrandsrcanrberparallel,ranti-
parallel,rorrarcombinationrofrbothr(ProteinrSecondaryrStructure_r-rCORRECTrrANSWER-T

(T/F)rNotrallrproteinsrhaverarstablerorrstructuredrfinalrconfigurationr-rCORRECTrrANSWER-
T

(T/F)rNuclicracidsrarerlinearrpolymersr-rCORRECTrrANSWER-T

(T/F)rStrandsrofrDNArandrRNArconsistrofrrepeatedrbuildingrblocksr-rCORRECTrrANSWER-
T

(T/F)rThernativerstructurerofrarproteinrisrthermostrthermodynamicallyrstablerstructurer-
rCORRECTrrANSWER-T




(T/F)rTherpeptiderbondsrinrtherpeptiderbackbonerarerplanaorr(therpeptiderbondsrhaverdoubl
e-bondrcharacter,rwhichrleadrtorarplanarrgeometryr-
rbutrrotationsrcanroccurratrtheralpharcarbon)r-rCORRECTrrANSWER-T




(T/F)rThersegregationrofrnonpolarrmoleculesrminimizesrsurfacerarearofrorderedrwaterrmole
culesr-rCORRECTrrANSWER-True

(T/F)rThersequencerofrbasesruniquelyrdefinesrthernucleicracidr-rCORRECTrrANSWER-T

(T/F)rWaterrmoleculesrformranrorderedrstructureraroundrnonpolarrmoleculesr-
rCORRECTrrANSWER-True




#rofrmembrancesrinrMitochondriar-rCORRECTrrANSWER-two

#rofrmembranesrinrchloroplastsr-rCORRECTrrANSWER-two

#rofrmembranesrinrEndosomesr-rCORRECTrrANSWER-one

#rofrmembranesrinrGolgirComplexr-rCORRECTrrANSWER-one

#rofrmembranesrinrLysosomesr-rCORRECTrrANSWER-one

#rofrmembranesrinrnucleusr-rCORRECTrrANSWER-two

#rofrmembranesrinrPlantrCellrwallr-rCORRECTrrANSWER-one

#rofrmembranesrinrRERr(RoughrEndoplasmicrReticulum)r-rCORRECTrrANSWER-one