- 问题详情: 下列对ATP的叙述中,错误的是( )A.远离A的高能**键容易水解 B.只在光合作用中产生C.ATP和ADP可以相互转化 D.生命活动的直接供能物质【回答】B知识点:酶与ATP题型:选择题...
- 24349
- 问题详情:在双链DNA分子中,有关四种碱基的关系,下列等式中错误的是( )A.= B.=C.A+T=G+C D.A+G=T+C【回答】C试题分析:在双链DNA分子中,碱基之间的配对遵循碱基互补配对原则,即A=T,C=G。由此可见==1A+C=T+G或A+G=T+C。但A+T不一定等于G+C。故选C知识点:DNA...
- 27319
- 问题详情:下列关于细胞生命活动过程中ATP、ADP的说法正确的是()A.细胞内的物质合成总与ATP的合成有关B.ATP在生物体内大量存在,以满足机体生命活动的需要C.ATP是高能化合物,ADP不属于高能化合物D.细胞呼吸过程中产生大量ATP的阶段需要氧气参与【回答】D知识点:酶与ATP题型:选择题...
- 24338
- 问题详情:下列有关细胞内组成元素和化合物的叙述,正确的是( ) A.牛以草为食,则牛体细胞内纤维素含量较多 B.ATP、酶和RNA中可能含有相同的糖类 C.骆驼食物中**盐所含氮元素可参与脂肪的合成 D.T2噬菌体利用细菌的核苷*合成DNA,则二者的核苷*种类相同【回答】B知识点:细胞...
- 18345
- 问题详情:Momwantstobuyasweater me.A.in B.to C.for D.at【回答】C解析:考查短语buysb.意为“为某人买某物”。故选C。知识点:动词和动词短语题型:选择题...
- 32202
- 问题详情:细胞核中的DNA不能直接到细胞质中指导蛋白质的合成,在DNA和蛋白质之间充当信使的物质是() A.ATP B.mRNA C.氨基* D.DNA聚合酶【回答】B知识点:基因的概念与表达题型:选择题...
- 12516
- 问题详情:运用元素周期律来判断,则下列叙述中不正确的是A.元素Be的金属*比Na的金属*弱B.At是第6周期第ⅦA族元素,HAt不稳定,且AgAt是有*难溶于水的物质C.Sr是第5周期第ⅡA族元素,则SrSO4可能难溶于水,Sr(OH)2为强碱D.As是第4周期第ⅤA族元素,则AsH3比NH3更稳定【回答】【*】D【解析】*...
- 9029
- 问题详情:下列关于细胞的叙述,错误的是 A.细胞内的酶都附着在生物膜上 B.植物细胞壁的主要成分是纤维素和果胶 C.ATP水解释放的能量可用于细胞内的吸能反应 D.水和无机盐参与构建细胞及维持细胞的生命活动【回答】A知识点:细胞的结构题型:选择题...
- 21923
- Uniformpricesaresetateverystore.Jean'smakingadeadsetatCharles.Thesunsetataboutsixo'clock.setatalowangleorslant.haveashampooandsetatthehairdresser'sHesetathisadversaryinstronglanguage.Tradingmarginissetat20%ofthecontractvalue.setatasharporhighangle...
- 4054
- 问题详情:AmansetoffabombataRussiantrainstationonSunday, atleast16peopleinthedeadlyattack. A.killed B.kill C.tokill D.killing【回答】D知识点:非谓语动词...
- 23133
- Iarrivedatschoolatseven.Thetrainarrivedatexactly8o'clock.Wearrivedatthree(o'clock)sharp.Thesurveyorsarrivedatwidelydifferentvaluations.Theyarrivedattheirdestinationovernight.Weeventuallyarrivedatourdestination.AtlastPussinBootsarrivedatastatelycast...
- 22299
- Sheiscleveratpainting.becleveratmakingmodelplanesThelittlegirlisnotverycleverataddition.I'mcleverattakingoffthefortune-teller.MissRichisgoodatsketchingpeople,she'scleveratgettingalikeness.Thiscongressmaniscleveratmakingscoresoffhecklersatpublicmeet...
- 25558
- Hemadearudegestureathisfriend.Hemadearudegestureatthedriveroftheothercar.cockasnookatsb/sth;makearudegestureatsbbyputtingone'sthumbtoone'snoseEvenhisyap-yapgestureatNevillewashardlyoffensiveuntilhefolloweditupwithhisshoe-suckerorboot-lickercrackonA...
- 14497
- Itisuselesstoclutchatastraw.Istaggeredandhadtoclutchatachairforsupport.Thecareless,theslow,theunobservant,thelazyfailtoseeit,orclutchatitwhenithasgone."Skulkerhascaughtalittlegirl,Sir,"hereplied;"andthere'saladhere",headded,makingaclutchatme,"w...
- 16906
- 问题详情:Staying at home ______ boring. kind kinds of kind of kinds of 【回答】C知识点:动词和动词短语题型:选择题...
- 16098
- 问题详情:At________timedoesthesalesgirlgetuplateinthemorning,thoughsheisalwaystoobusy_________agoodrest. A.no,totake B.no,taking C.any,totake D.one,taking 【回答】A知识点:非谓语动词题型:选择题...
- 22149
- 问题详情: —Istheflowerbeautiful?—Yes,at_____it’s_____theoneyouboughtforme.A.last,asbadas B.least,nobetterthanC.last,notbetter D.least,noworsethan【回答】D知...
- 30960
- (at)blinkattheharshlightSofar,atleast.mycontemporariesatschoolLookatitobjectively.Shesmilesateverybody.revileat[against]abusesarriveatsevenprompt=arrivepromptatsevenHehadabrickthrownathimatthatmeeting.Hewasneverwithoutagig,atleastatweekends.Shelooked...
- 5658
- 问题详情: At________midnight,________buildingnextdoortoourscaughtfire. A.the;a B.the;the C./;the D./;a【回答】C知识点:冠词题型:选择题...
- 5077
- I'mgoodatgeography.I’mgoodatcooking.He'sgoodatbasketball.He'sgoodatgolf.I'mgoodatcooking.Menaregoodatlying,womenaregoodatspoiling.Heisgoodatstudying.Heisgoodatinterpretation.Heisgoodatmusic.(Theyaregoodatboating.Iwasgoodatsumsatschool.Fluentatma...
- 22763
- myneighbourattableShehadlunchatthattableyesterday.HewasattablewhenIcalled.Thereweretwoservantswaitingattable.Thehostesspresidedattablewithtactandurbanity.Learntoserveattable,ieasawaiterItisimpolitetoblowyournoseattable.Itisbadmannerstoblowyournoseatt...
- 15455
- Thenumbersofunitclassesarelistedathere.LocatedinDallas'sexclusiveGreenwayParksneighborhood,thishomehasbeenlistedatthesamepriceforfourmonths.Theoperatorgavemehersupervisor,whosaidtherewasaphonelistedattheaddress,butthatshecouldnotgivemethenumber.Ifyo...
- 14775
- 问题详情: Thenumberofstay-at-homefathersreachedarecordhighlastyear,newfiguresshow,_______familiessawariseinfemalebreadwinners.A.if B.as C.because ...
- 6098
- 问题详情: At about10pmonSeptember7,2013,TommyBarberandhisfriendSusanLaneyweresteppingoutoftheelevatorofherapartmentbuildingwhentheysmelledsmoke.“Mydogs!”Susanyelledasshe 41 downthehalltoherapartment.Tommy,54,whois 42 ,walkedtowardt...
- 28613
- Theyhaveneverbeforebeensodependentonfindingagreementandrarelybeforesohopelessatdoingit.Tofinditseemedratherahopelessattemptinthestretchofrichgrassbeforethem.Ahopelessattachmentisasprettyanaccompanimenttothetuneoflifeasagentlemanmightwishtohave....
- 13919