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主題 : 首都醫科大學2015年生物化學考博試題
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樓主  發表于: 2015-03-12   

首都醫科大學2015年生物化學考博試題

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;i-<dAV8B  
一、名詞解釋(應該是5個,但是記不清是哪5個了) -=4{X R3  
1.chaperon 2.motif 3.allosteric enzyme 4.ribozyme 5.gluconeogenesis 6.sernicon servativereplication `EWQ>m+  
pE381Cw  
二、選擇題(很多題記不太清楚了,細節問題請包容) <`")Zxf+  
1.Which of the followingstatements concerning protein domains is true? =58:e7(df  
A.they are examples ofstructural motifs RN"Ur'+  
B.large polypeptide may beorganized into struoturally close but functionally independent units 2P,{`O1]  
C.the consist of separatepoly peptide chains(subunits) VI k]`)#  
D.they have been found onlyin prokaryotic proteins 75W@B}dZd  
2.Prion disease aregenerally believed to a associated with cI (}  
A.infection by a RNA vins B.infection by DNA C.infection by protein D.infection by mRNA m8<.TCIQ  
3.The secondary structureof transfer RNA is '#NDR:J"  
A.described as double helix B.described as reversed “L” C.described as cloverleaf D.present only ineukaryotic cells Ctx{rf_~  
4.In competitive inhibiyion Jxsch\  
A.Km not change,Vmax not change B.Km rise, Vmaxnot change C.Km not change,Vmax rise D.Km rise, Vmaxrise i;fU],aK!  
5.The part og the RNApolymerase noloenzyme that initiates binding to DNA is called the b^R_8x  
A.sigma factor B.intron C.ribosomal RNA D.core enzyme khVfc  
6.Sunlight can damage DNAby 1 Sz v4  
A.making apyrimidinic sites B.causing spontaneousdeamination of bases +o|I@7f  
C.forming pyrimidinedimmers D.alkylating DNA {xRO.699  
7.Which is therate-limiting enzyme, inregulation of the pentose phosphate pathway? -Ra-Ux  
A.hexokinase B.6-phosphofructokinace-1 C.Clucose-6-phosphatedehydrogenase D.pyrurate dehydrogenase I78Q8W(5亚洲国产精品va在线观看麻豆