生物化学试题(国外英文资料).docx

生物化学试题(国外英文资料).docx

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生物化学试题（国外英文资料）

BiochemicaltestTrya

Choice（20times2=40）

Normaladults'dailyurinevolumeis（C）A500mlB1000mlC1500mlD2000ml

Whichofthefollowingaminoacidsistheaminoacid（B）AserineBprolineCleucineDhistidine

3:

themainforceformaintainingthestabilityofaproteinsecondarystructureis（C）

AsaltbondBhydrophobicbond,ChydrogenbondDdisulfidebond

4protein（C）inthestateofisoelectricpoint

AmoleculeistheleaststableofthechargeBmolecules,themostvolatileCtotalchargeiszeroDsolubility

Trytodeterminethecorrectsequenceofplasmalipoproteindensity（B）fromlowtohigh.

A.LDL,VLDA,CMB.CM,VLDL,LDL,HDL

C.CM,VLDL,IDLd.VLDL,LDL,CM,andHDLOnecarbonunitdoesnotinclude（C）

A.--CH3b.CH2--c.CO2

Noaminoacidsintheproteinare（B）

A.cysteinec.arginined.lysine

Themainchemicalbondthatholdstheproteinprimarystructureis（C）

A.ionicbondb.disulfidebond

Whichofthefollowingisthewrong（D）oftheconceptofthealpha-screw

A:

usuallytherighthandscrewb.3.6aminoacidsforAspiralC.Themainhydrogenbondingismaintainedbythemaindisulfidebond

10.Combiningwiththeenzymeinwhichofthefollowingcircumstancesisactive（D）

A.substantive enzymeprotein

B.coenzymeexistalone

C.enzymesubstantive base

D.allexistsintheformofenzyme

E.thereareagonists

11.AboutthemeaningoftheKmvalue,isnotcorrect（C）

A.Kmisthecharacteristicconstantofenzyme

B.Kmvalueassociatedwiththestructureofenzyme

C.Kmisequaltothereactiontothemaximumspeedthroughtheenzymeconcentration

TheD.Kmisequaltothesubstrateconcentrationatthemaximumofonehalf

VitaminB2isthecomponentofthefollowingsubbaseorcoenzyme（D）

A.NAD?

?

?

+B.NADPH,pyridoxined.FAD

13,1moleofacetylCoAcompletelyoxidizeshowmanymolesofATP（B）

A.11b.1c.13d.14

14,therawmaterialforthesynthesisofDNAis（A）A,dATP,dGTP,dCTP,dTTPB,ATP,dGTP,CTP,TTP

C,ATP,UTP,CTP,TTPD,dATP,dUTP,dCTP,dTTP

15,syntheticRNAofrawmaterialis（A）

A,ATP,GTP,UTP,CTPmadeB,dATP,dGTP,dUTP,dCTPC,ATP,GTP,UTP,TTPDmade,dATP,dGTP,dUTP,dTTP

16,theendproductofpurinenucleotidedecompositionis（C）

A,urea,ketonebodyBCD,uricacid,lacticacid,

Theendproductoftheaerobicoxidationofsugaris（C）

A,lacticacid,ureaBC,carbondioxideandwater2Do ,

ketonebody

18,theformerreferstotheenzymeis（A）A,theprecursoroftheinactiveenzyme

B, catalysisofenzyme

C,theenzymethatisactivewhenthetemperatureishighC,theenzymethatisactivewhenthePHishigh

19,liverpatientsspiderangiomaorliverpalmbecause（B）

A.insulininactivatedabated

B.estrogeninactivatedabated

C.testosteroneinactivatedabatedFemalehormoneinactivatedenhancement20,mainlycomesfrom（A） bilirubin

A.hemoglobin

B.myoglobinbreakdown

Thedecompositionoftheglobulin

D.myoglobinbreakdown

Two.Multiplechoicequestions（2x5=10）

Thefollowingaretheessentialfattyacids（ABC）.

A.linoleicacidb.linoleicacidc.arachicacidd.stearicacide.stearicacid

WhichofthefollowingnucleotidesaretheingredientsofsyntheticRNA（ABCE）.

A.theb.thec.thed.the

Thefollowingstatementsabouttheoxygen-freeoxidationof

sugar,whicharecorrect（BD）

A.fromglucoseorsugar,B.Amoleculeofglucoseisclearedbyoxygenwithoutoxygen

C.Amoleculeofsugarhasanet3moleculesofATP

D.theendproductislacticacid

E.carbondioxideandwater

Whatarethecorrect（ABCD）statementsaboutnucleotides?

A.ATPisthebasicunitofDNAandRNA.ATPisthedirectenergysupplier

C.UTPparticipatesinthesynthesisofglycogeninglycogen

Thefollowingrelationship（ABD）betweenenzymeproteinandcoenzyme

A.differentenzymeproteinsmayusethesamecoenzymeandcatalyzedifferentreactions

B.onlythewholeenzymehascatalyticactivity

C.bothhavethesametaskinenzymaticreactions

D.Anenzymeproteinusuallyonlyneedsacoenzyme

（4*5=20）

Thesaltofprotein:

inasolutioncontainingaprotein,itisaddedtothehighconcentrationofneutralsaltandtheprocessofprecipitatingtheprotein.

Fatmobilization:

thestoredfatisgraduallyhydrolyzedbylipaseinthetissuecells,releasingfattyacidsandglycerin,andsupplyingothertissueswithoxidativeuse.

Glycosin:

theprocessofconvertinganon-sugarsubstanceintoglucose.

Bloodsugar:

glucoseinthebloodQ&a（30minutes）

WouldyouwritedownthetypeandfunctionoftheRNA?

（6）Page24

Whyisketoacidosisinchronichunger?

（5points）Onpage89

3,thebasicprinciple,classificationandfunctionofplasmalipoproteinsseparatedbyspeedingcentrifugation.（10points