细胞生物学考试复习Word文件下载.docx
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细胞生物学考试复习Word文件下载.docx
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C.信号肽
D.特殊氨基序列
7.溶酶体的功能有
A.细胞内消化
B.细胞自溶
C.细胞防御
D.自体吞噬
8.线粒体内膜的标志酶是B
A.苹果酸脱氢酶
B.细胞色素C氧化酶
C.腺苷酸激酶
D.单胺氧化酶
9.染色质由以下成分构成
AC
A.组蛋白
B.非组蛋白
C.DNA
D.少量RNA
11.胞质骨架主要由
A.中间纤维
B.胶原纤维
C.肌动蛋白
D.微管
12.80S核糖体的大亚基由
构成:
A.28SrRNA、5SrRNA、5.8SrRNA
B.28SrRNA、16SrRNA
C.18SrRNA
D.49种蛋白质
13.具有极性的细胞结构有
A.微丝
B.中间纤维
C.高尔基体
14.
细胞内具有质子泵的细胞器包括
A.内体
B.溶酶体
C.线粒体
D.叶绿体
15.
通讯连接的主要类型包括
A.间隙连接
B.间壁连接
C.胞间连丝
D.神经突触
16.
微体中都含有
17.
以下那些描述符和溶酶体的特征
A.含酸性水解酶
B.膜蛋白高度糖基化
C.膜有质子泵
D.由两层单位膜围成
18.
以下能结合GTP的蛋白质有
ABD
A.RAS
B.微管蛋白
D.G蛋白
19.以下哪些情况下膜的流动性较高__AB_D_
A.胆固醇含量高
B.不饱和脂肪酸含量高
C.长链脂肪酸含量高
D.温度高
20.N-连接的糖基化中,糖链连接在哪一种氨基酸残基上_D___
A.脯氨酸(proline)
B.羟脯氨酸(hydroxyproline)
C.天冬氨酸(asparticacid)
D.天冬酰胺(asparagines)
21.以下哪些运输途径是笼形蛋白(clathrin)衣被参与的ABC____
A.高尔基体→内体(endosome)
B.高尔基体→溶酶体,植物液泡
C.高尔基体→内质网
D.质膜→内体
E.内质网→高尔基体
22.光系统I的中心色素为__B__
A.叶绿素b
B.叶绿素a
C.类胡萝卜素
D.叶黄素
23.动物细胞纤毛中的骨架结构为___A_,马达蛋白为_B___
A.微丝
B.微管
C.中间纤维
D.Myosin
E.Dynein
F.Kinesin
24.微管具有极性,其(+)极的最外端是__B__
A.α球蛋白
B.β球蛋白
C.γ球蛋白
25.纤粘连蛋白V字形二聚体在C端以哪一种化学键相连____
A.离子键
B.氢键
C.二硫键
26.粘合带(adhesionbelt)处连接的胞内骨架成分为____
27.S期的早熟凝集染色体(prematurelycondensedchromosome,PCC)为__B__
A.单线状
B.粉末状
C.双线染色体
28.将MPF注射到G1期的细胞内,则G1期细胞的染色体开始__B__
A.解旋
B.凝缩
C.复制
29.动物小肠细胞对葡萄糖的吸收依靠_A___
A.钠离子梯度驱动的同向协同(symport)
B.钠离子梯度驱动的反向协同(antiport)
C.钾离子梯度驱动的同向协同
D.钾离子梯度驱动的反向协同
30.以下哪些可作为细胞主动运输的直接能量来源_ACD___
A.离子梯度
B.NADH
C.ATP
D.光
31.类囊体膜上电子传递的方向为__D__
A.PSI→PSII→NADP+
B.PSI→NADP+→PSII
C.PSI→PSII→H2O
D.PSII→PSI→NADP+
32.在磷脂酰肌醇信号通路中,G蛋白的直接效应酶是_B___
A.腺苷酸环化酶
B.磷脂酶C-β
C.蛋白激酶C
33.以下哪一种感觉不是由G蛋白偶联型受体介导的__A__
A.听觉
B.味觉
C.视觉
D.嗅觉
34.胞内受体__AB_
A.是一类基因调控蛋白
B.可结合到转录增强子上
C.是一类蛋白激酶
D.是一类第二信使
35.鞭毛基体和中心粒_A___
A.均由三联微管构成
B.均由二联微管构成
C.前者由二联微管、后者由三联微管构成
D.前者由三联微管、后者由二联微管构成
36.非组蛋白__AB__
A.又称序列特异性DNA结合蛋白
B.属酸性蛋白质
C.属碱性蛋白
D.只在S期合成
37.端粒(telomere)_ABCD___
A.能维持染色体的稳定性
B.由高度重复的短序列串联而成
C.具有“细胞分裂计数器”的作用
D.复制需要反转录酶(端粒酶)
38.用离心法能够分离悬浮培养的分裂期细胞,是因为分裂期细胞_B___
A.密度大
B.体积大
C.沉降速度慢
39.以下哪些药物可以抑制动物细胞的胞质分裂_C_EF__
A.秋水仙素
B.紫杉酚
C.细胞松弛素
D.微管蛋白抗体
E.肌动蛋白抗体
F.肌球蛋白抗体
40.Wee1表达不足,细胞将_B___
A.过度生长
B.过早分裂
C.不分裂
41.在后期A(anaphaseA)着丝点处的微管开始_B___
A.组装B.去组装C.分化成微丝D.聚合
42.“Hayflick”极限指_B___
A.细胞最小分裂次数
B.细胞最大分裂次数
C.细胞最适分裂次数
42.Phasecontrastmicroscopecanbeusedtoobserve
AC
A.
Alivecell.
B.
Stainedcell.
C.
Notstainedcell.
D.
Alloftheabove.
43.Ifyouwantedtoseparateeukaryoteribosomalsubparticlesbysize,whichofthefollowingtechniqueswouldyouuse?
D
Gelelectrophoresis.
Radiolabelling.
Polymerasechainreaction.
Densitygradientcentrifugation.
44.Whichofthefollowingdescriptionaboutprioninnottrue?
C
A.Prionisasortofproteinthatcausingsomeseverediseases,suchasbovinesponge-formencephalopathies(BSM,madcowdisease).
B.Prioncanreplicateitselfbychangetheconformationoftheproteinswhicharesimilartoprion.
C.Prionisatranscriptionregulatoryprotein.
D.PrionwasdiscoveredbyPrusinerin1982.
45.Ingeneral,glycoproteinsandglycolipids:
A.Areontheouterleafletoftheunitmembrane,facingtheenvironmentofacell.
B.Areontheinnerleafletoftheunitmembrane,facingthecytosol.
C.Areequallydistributedontheinnerandoutersurfaceoftheunitmembrane.
D.Occuronlyininternalmembranes.
46.Whichofthefollowingisnotthefunctionofthebio-membrane?
A.Signaltransduction.
B.Transportation.
C.Transcription.
D.Compartmentalization.
47.Inhumanintestineglucoseareabsorbedbythewayof
B
A.Na+poweredantiport.
B.Na+poweredsymport.
C.Channelproteins.
D.ABCtransporter.
48.TheNa+/K+ATPaseofeukaryoticcells
A
A.IsaP-typepump.
B.IsaV-typepump.
C.IsanF-typepump.
D.IsanATP-bindingcassette.
49.Followingorganellesareallsurroundedbydoublebio-membranesexcept
A.Mitochondrion
B.Chloroplast.
C.ER.
D.Nucleus.
50."
Cis,"
"
medial"
and"
trans"
specifydifferentcompartmentsofthe..A.
A.Golgibody.
B.Endoplasmicreticulum.
C.Mitochondrion.
51.ThePHvalueinlysosomeislowerthanthatincytoplasmbecauselysosomemembraneexist
A.P-typeH+pump.
B.F-typeH+pump.
C.V-typeH+pump.
D.P-typeNa+-K+pump.
52.Whichofthefollowingstatementsaboutsignalsequencesisfalse?
A.Signalsequencesareremovedfromproteinbysignalpeptidaseafterthesortingprocesshasbeencompleted(exceptnuclearlocalizationsequence(NLS)andsignalpatch).
B.Eachsignalsequencespecifiesaparticulardestinationinthecell.
C.NLSdirectproteinsintocytoplasmfromnucleus.
D.Anyproteinwithapropersignalsequencewillbetransferredintotheperoxisome.
53.Whichofthefollowingaboutperoxisomesistrue
A.Theyareformedbybinaryfissionofexistingperoxisomes.
B.TheycontaintheirownDNA.
C.Theycontainoxidativeenzymes.
D.BothAandC
54.PSIabsorblightofwavelengthat
680nm.
700nm
280nm
BothAandB
55.WhichofthefollowingisnotencodedbythemtDNA?
A.Cytochromec.
B.Cytochromeb.
C.F0.
D.Keratin.
56.Cyclicphotophosphorylationisaccomplishedby
A.PhotosystemI.
B.PhotosystemII.
C.PhotosystemIII.
D.BothphotosystemsIandII.
57.G-proteinlinkedreceptorsare
A.Single-passtransmembraneproteins.
B.Seven-passtransmembraneproteins.
C.Three-passtransmembraneproteins.
D.Notatransmembraneprotein.
58.WhichofthefollowingisNOTasecondmessenger?
A.NO.
B.cGMP.
C.cAMP.
D.IP3.
59.Dyneinsaremotorproteinsthatmovefrom
along
A.–endto+end;
microtubules.
B.+endto–end;
C.–endto+end;
microfilaments.
D.+endto–end;
61.Microtubulesfunctionincells
A.Asstructuralsupports,maintainingtheshapeofthecell.
B.Toformthespindleduringmitosisandmeiosis.
C.Asapartofthesystemthatcausesmovementinciliaandflagella.
D.Alloftheabove.
62.FunctionsoftightjunctionsincludeallthefollowingexceptD
A.Separationofextracellularfluid.
B.Sealingofbodycavities.
C.Preventionofdiffusionofmembraneproteinsandlipidsbetweenapicalandbasolateralregions.
D.Tightcommunicationandextrangeofsmallmoleculesbetweenneighboringcells.
63.Whichofthefollowingcytoskeletonstructureslinkstodesmosomesandhemidesmosomes?
B
A.Microtubules.
B.Intermediatefilaments.
C.Microfilaments.
D.alloftheabove.
64.Cellbindingdomaininfibronectinscontain
A.RGDsequences.
B.KDELsequences.
C.Gly-XYsequences.
D.PESTsequences.
65.Thecoreproteinsinnucleosomeare
A.H2A,H2B,H3,H4.
B.H1A,H1B,H3,H4.
C.H1A,H2A,H3,H4.
D.H1,H2,H3,H4.
66.Eukaryoticchromosomescontaintwogeneraldomainswhichrelatetothedegreeofcondensation.Thesetworegionsare
A.Uniforminthegeneticinformationtheycontain.
B.Calledheterochromatinandeuchromatin.
C.SeparatedbylargestretchesofrepetitiveDNA.
D.BothAandB
67.Whatisthemainfunctionofcyclinproteins?
B
A.Theyinitiateasignaltransductioncascadethatleadstochangesinthecell’sbehavior.
B.TheyregulatethecelldivisionbybindingandactivatingCDKenzymes.
C.Theyarethemainproteincomponentsofthekinetochore.
D.Theyblockcellcycleprogressionwhenconditionsarenotappropriateforgrowth.
68.MPFconsistsof
A.CDC2andcyclinD
B.CDC2andcyclinE
C.CDC2andcyclinB
D.CDK1andcyclinC
69.Necrosis
A.MaybemediatedbyFASsignalpathway.
B.CharacterizedbyDNAdegradedintoabout200bpfragment.
C.Isageneticallycontrolledprocess.
D.Occurswhencellisinjured.
70.Whichofthefollowingmutationsinatumorsuppressorgenewillmostlikelynotresultincancer?
A.Pointmutant.
B.Deletion.
C.Generearrangement.
71.Whichofthefollowingaboutapoptosisisnottrue?
A.IsaccompaniedbyrandomDNAdegradation.
B.Isasortof"
cellularself-destruction"
thattakesplaceinnormaltissues.
C.Ischaracterizedbynuclearfragmentationandcellularbreakdownintoapoptoticvesicles.Anddoesnotinduceinflammation.
D.Differsfromnecrosisbecausenecrosisoccurswhencellisinjured.
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