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一、名词解释(应该是5个,但是记不清是哪5个了) &.+[~2
1.chaperon 2.motif 3.allosteric enzyme 4.ribozyme 5.gluconeogenesis 6.sernicon servativereplication ph30 /*8
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二、选择题(很多题记不太清楚了,细节问题请包容) {j,bV6X
1.Which of the followingstatements concerning protein domains is true? .
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A.they are examples ofstructural motifs TpZ) wC
B.large polypeptide may beorganized into struoturally close but functionally independent units aAwnkQ$
C.the consist of separatepoly peptide chains(subunits) doP4N6
D.they have been found onlyin prokaryotic proteins Otn,(j;u
2.Prion disease aregenerally believed to a associated with _"a(vfl#
A.infection by a RNA vins B.infection by DNA C.infection by protein D.infection by mRNA 8
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3.The secondary structureof transfer RNA is M$%aX,nk'
A.described as double helix B.described as reversed “L” C.described as cloverleaf D.present only ineukaryotic cells f>waFu-
4.In competitive inhibiyion .+ai
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A.Km not change,Vmax not change B.Km rise, Vmaxnot change C.Km not change,Vmax rise D.Km rise, Vmaxrise (Y,
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5.The part og the RNApolymerase noloenzyme that initiates binding to DNA is called the "KW\:uc /
A.sigma factor B.intron C.ribosomal RNA D.core enzyme 05DK-Wh?
6.Sunlight can damage DNAby mmTc.xh
A.making apyrimidinic sites B.causing spontaneousdeamination of bases 4'Vuhqk
C.forming pyrimidinedimmers D.alkylating DNA *J8j_-i,R
7.Which is therate-limiting enzyme, inregulation of the pentose phosphate pathway? bW3e*O$V
A.hexokinase B.6-phosphofructokinace-1 C.Clucose-6-phosphatedehydrogenase D.pyrurate dehydrogenase m{_\@'q
8.Transcription is theprocess in which 3UD_2[aqN(
A.protein is synthesized from DNA B.DNA is replicated c(ZkK
C.RNA is synthesized from protein D.ENA is synthesized fromDNA exTpy
9.Which of the following isa sis-acting element?
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A.RNA polymerase B.Enhancer C.transcriptionfactor I D.structural gene ZaH<\`=%
10.The protein that canbind to RNA and prevent the trascription is called +S^Uw'L$=T
A.inducer B.repressor protein C.cis-acting element D.positive regulatoryproteins C%}FVO\c
11.蛋白质吸收紫外光的大小取决于 :~
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A.脂肪族氨基酸含量 B.酸性氨基酸含量 C.芳香族氨基酸含量 D. 蛋氨酸含量 7AV !v`
12.DNA变性是指 i)+@'!6
A.分子中磷酸二酯键断裂 B.多核苷酸链解裂 C.DNA分子由超螺旋变为双键双螺旋 D.互补碱基之间氢键断裂 C[& \Xq
13.关于关键酶的叙述哪项错误? -zN*2T
A.关键酶常是变构酶 B.关键酶常位于代谢途径的起始或分叉部位 >e=tem~/
C.关键酶是共价修饰酶 D.关键酶活性最高 &=<x&4H+
14.下列哪个反应是三羧酸循环中的底物水平磷酸化反应: tP"C>#LO
A.异柠檬酸—α-酮戊二酸 B.琥珀酰COA—琥珀酸 C.琥珀酸—延胡索酸 D.延胡索酸—苹果酸 ,K+K`"Oy
15.体内贮存脂肪主要代谢来自 c:>&Bg&,6T
A.酮体 B.葡萄糖 C.脂肪酸 D.生糖氨基酸 &P&M6v+
16.人体内CO2生成方式是: qg'RD]a> R
A.O2与C直接合成 B.O2与CO结合 C.有机酸的脱羧 D.一碳单位与O2结合 p#qQGJe
17.飘零核苷酸从头合成时生成的重要代谢中间物是: ]A5FN4 E
A.GMP B.AMP C.TMP D.GTP +a"MSPC4w
18.细胞核中分布的酶主要是关于催化代谢的: ",w@_}z:
A.糖代 B.甘油三酯代 C.蛋白质代 D.核糖代谢
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19.外显子是: sn@gchO9s
A.基因突变的表现 B.DNA被水解断裂片段 C.转录模板链 D.真核生物的编码序列 QPg
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20.基因表达调控的基本控制点是: q$(aMO&J
A.基因结构活化 B.转录起始 C.转录后加工 D.蛋白质的翻译及译后加工 8l~]}2LAs
21.从头合成TMP与UMP的共同原料是: aiF7\^aw$
A.氨甲酰磷酸 B.磷酸核糖焦磷糖 C.甘氨酰胺核苷酸 D.甲酰甘氨核苷酸 2h IM!wQ
22.不能氧化酮体的组织是: i'H{cN6
A.心脏 B.肝脏 C.脑 D.肾 l"W9uS;\T
23.三羧酸循环的限速酶是: b" 1a7
A.异柠檬酸脱氢酶 B.顺乌头酸酶 C.α-酮戊二酸脱氢酶 D.苹果酸脱氢酶
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24.脂肪酸合成中的供氧体是: Xjw>Qws
A.FADH2 B.NADH+H+ C.NADPH+H+ D.FMNH2 re2M!m6k5
25.血浆中胆固醇酯化需要: P%8
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A.脑磷脂 B.卵磷脂 C.乙酰COA D.酯酰COA ?w#V<3=
26.哪个是糖酵途径中的限速酶: 07[A&