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Qyy.IPTP
一、名词解释(应该是5个,但是记不清是哪5个了) I[n^{8gz
1.chaperon 2.motif 3.allosteric enzyme 4.ribozyme 5.gluconeogenesis 6.sernicon servativereplication eilYA_FL.
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二、选择题(很多题记不太清楚了,细节问题请包容) |.wEm;Bz
1.Which of the followingstatements concerning protein domains is true? "le>_Ze_>|
A.they are examples ofstructural motifs @}kv-*
B.large polypeptide may beorganized into struoturally close but functionally independent units -1J[n0O.
C.the consist of separatepoly peptide chains(subunits) *&f$K1p
D.they have been found onlyin prokaryotic proteins i E CrI3s
2.Prion disease aregenerally believed to a associated with <\;#jF%V
A.infection by a RNA vins B.infection by DNA C.infection by protein D.infection by mRNA 8n>9;D5n
3.The secondary structureof transfer RNA is rl0< Ls
A.described as double helix B.described as reversed “L” C.described as cloverleaf D.present only ineukaryotic cells *E{2J:`
4.In competitive inhibiyion "Y\_
TtY
A.Km not change,Vmax not change B.Km rise, Vmaxnot change C.Km not change,Vmax rise D.Km rise, Vmaxrise zk( U8C+
5.The part og the RNApolymerase noloenzyme that initiates binding to DNA is called the 3$X'Y]5a
A.sigma factor B.intron C.ribosomal RNA D.core enzyme o*J3C>
6.Sunlight can damage DNAby QVtQx>K`
A.making apyrimidinic sites B.causing spontaneousdeamination of bases RSo&