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一、名词解释(应该是5个,但是记不清是哪5个了) !x'/9^i~v
1.chaperon 2.motif 3.allosteric enzyme 4.ribozyme 5.gluconeogenesis 6.sernicon servativereplication u.rY#cS,-R
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二、选择题(很多题记不太清楚了,细节问题请包容) NH_<q"gT
1.Which of the followingstatements concerning protein domains is true? r H ~" 4
A.they are examples ofstructural motifs LkQX?2>]
B.large polypeptide may beorganized into struoturally close but functionally independent units T6ENtp
C.the consist of separatepoly peptide chains(subunits) vX ] Gf4,
D.they have been found onlyin prokaryotic proteins !
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2.Prion disease aregenerally believed to a associated with _ 84ut
A.infection by a RNA vins B.infection by DNA C.infection by protein D.infection by mRNA ,-z9 #t
3.The secondary structureof transfer RNA is Is+O
A.described as double helix B.described as reversed “L” C.described as cloverleaf D.present only ineukaryotic cells c&L"N!4z
4.In competitive inhibiyion NzNA>[$[
A.Km not change,Vmax not change B.Km rise, Vmaxnot change C.Km not change,Vmax rise D.Km rise, Vmaxrise }-
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5.The part og the RNApolymerase noloenzyme that initiates binding to DNA is called the In[Cr/&/Y
A.sigma factor B.intron C.ribosomal RNA D.core enzyme IIyI=WlpG
6.Sunlight can damage DNAby V%Sy
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A.making apyrimidinic sites B.causing spontaneousdeamination of bases h>Hb`G<
C.forming pyrimidinedimmers D.alkylating DNA RVeEkv[qp
7.Which is therate-limiting enzyme, inregulation of the pentose phosphate pathway? _2N$LLbg
A.hexokinase B.6-phosphofructokinace-1 C.Clucose-6-phosphatedehydrogenase D.pyrurate dehydrogenase 5ms""LD/
8.Transcription is theprocess in which MQ"xOcD*F
A.protein is synthesized from DNA B.DNA is replicated 2+X\}s1vN
C.RNA is synthesized from protein D.ENA is synthesized fromDNA ciMzf$+G$
9.Which of the following isa sis-acting element? y{N-+10z
A.RNA polymerase B.Enhancer C.transcriptionfactor I D.structural gene ?Ae ven
10.The protein that canbind to RNA and prevent the trascription is called %dY<=x#b
A.inducer B.repressor protein C.cis-acting element D.positive regulatoryproteins QVtQx>K`
11.蛋白质吸收紫外光的大小取决于 RSo&