udOdXz 6K? K|Xr~\= 一、名詞解釋(應該是5個，但是記不清是哪5個了）
I}+9@d 1.chaperon 2.motif 3.allosteric enzyme 4.ribozyme 5.gluconeogenesis 6.sernicon servativereplication
J(: y-U {G+iobQdd 二、選擇題（很多題記不太清楚了，細節問題請包容）
| va^l T 1.Which of the followingstatements concerning protein domains is true?
%i.Prckrb
A.they are examples ofstructural motifs
<Gn a}ALkg B.large polypeptide may beorganized into struoturally close but functionally independent units
\30rF]F`l C.the consist of separatepoly peptide chains(subunits)
f@ILC=c< D.they have been found onlyin prokaryotic proteins
P*]hXm85[K 2.Prion disease aregenerally believed to a associated with
RF= $SMTk A.infection by a RNA vins B.infection by DNA C.infection by protein D.infection by mRNA
vSy[lB|)24 3.The secondary structureof transfer RNA is
^'n;W<\p) A.described as double helix B.described as reversed “L” C.described as cloverleaf D.present only ineukaryotic cells
)O2IEwPd. 4.In competitive inhibiyion
3RF`F
i A.Km not change,Vmax not change B.Km rise, Vmaxnot change C.Km not change,Vmax rise D.Km rise, Vmaxrise
[V_+/[AA) 5.The part og the RNApolymerase noloenzyme that initiates binding to DNA is called the
0YC|;`J A.sigma factor B.intron C.ribosomal RNA D.core enzyme
P Q{5*}$N 6.Sunlight can damage DNAby
* ,zrg%8 A.making apyrimidinic sites B.causing spontaneousdeamination of bases
0g;)je2_2? C.forming pyrimidinedimmers D.alkylating DNA
pekNBq
Wm 7.Which is therate-limiting enzyme, inregulation of the pentose phosphate pathway?
[FZq'E"87 A.hexokinase B.6-phosphofructokinace-1 C.Clucose-6-phosphatedehydrogenase D.pyrurate dehydrogenase
yp[,WZt 8.Transcription is theprocess in which
(I#mo2 A.protein is synthesized from DNA B.DNA is replicated
w D:2sri C.RNA is synthesized from protein D.ENA is synthesized fromDNA
qi
">AQpp 9.Which of the following isa sis-acting element?
!b=W> 5h A.RNA polymerase B.Enhancer C.transcriptionfactor I D.structural gene
!zsrORF{ 10.The protein that canbind to RNA and prevent the trascription is called
<xe_t=N A.inducer B.repressor protein C.cis-acting element D.positive regulatoryproteins
i5=~tS 11.蛋白質吸收紫外光的大小取決于
!
,0 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
Qm=iCZ|E^! 12.DNA變性是指
$ai;8)C6 A.分子中磷酸二酯鍵斷裂 B.多核苷酸鏈解裂 C.DNA分子由超螺旋變為雙鍵雙螺旋 D.互補堿基之間氫鍵斷裂
$$uMu{?0i 13.關于關鍵酶的敘述哪項錯誤？
1J72*`4O K A.關鍵酶常是變構酶 B.關鍵酶常位于代謝途徑的起始或分叉部位
>t<\ zC|~w C.關鍵酶是共價修飾酶 D.關鍵酶活性最高
RehraY3q 14.下列哪個反應是三羧酸循環中的底物水平磷酸化反應：
MTN*{ug2: A.異檸檬酸—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—蘋果酸
ktS^^!,l % 15.體內貯存脂肪主要代謝來自
m=+x9gL2 A.酮體 B.葡萄糖 C.脂肪酸 D.生糖氨基酸
V#b=m
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