[轉錄]Re: [問題] 有沒有人考中興的分生所阿
※ [本文轉錄自 graduate 看板]
作者: starplayer (^^) 看板: graduate
標題: Re: [問題] 有沒有人考中興的分生所阿
時間: Sun Mar 14 17:40:52 2004
※ 引述《bradchu (左右為難)》之銘言：
: 我覺得不好寫ㄟ
: 不知道你們覺得如何
: 有點緊張
: 所以上來問問
嗯 生化考比較簡單 原因是一堆考古題
居然考題還能在網路看到(不知道是不是某本書),有點不大公平
(箭頭是網路給的答案)
8. The peptide, Ala-Arg-Gln-Met-Thr-Trp-Lys-Val, was digested with cyanogen
bromide (CNBr) to produce:
--> a) Ala-Arg-Gln-Met + Thr-Trp-Lys-Val.
b) Ala-Arg-Gln-Met-Thr-Trp + Lys-Val.
c) Ala-Arg + Gln-Met-Thr-Trp-Lys-Val.
d) Ala-Arg-Gln + Met-Thr-Trp-Lys-Val.
4. DNA gel electrophoresis is similar to SDS-PAGE of proteins because
a) In both cases a plot of log(Molecular weight) versus distance migrated
is linear.
b) Both techniques rely on a constant charge to mass ratio.
c) Both techniques utilize the sieving properties of gels.
-->d) All of the above are correct.
3. Cholesterol is essential for normal membrane functions because it
a) cannot be made by higher organisms, e.g. mammals.
b) catalyzes lipid flip-flop in the bilayer.
-->c) keeps membranes fluid.
d) spans the thickness of the bilayer.
5. The regulation of the glycolytic pathway involves
a) feedback inhibition by ATP.
b) allosteric inhibition by ATP.
c) allosteric stimulation by ADP.
-->d) All three choices are correct.
6. The precursor to glycogen in the glycogen synthase reaction is
-->a) UDP-glucose.
b) UTP-glucose.
c) glucose-l-P.
d) glucose-6-P.
11. Activation of the ___ kinase results in the activation of ___ kinase
and thereby the phosphorylation of both glycogen phosphorylase and glycogen
synthase.
a) pyruvate phosphorylase
b) phosphorylase cAMP-dependent protein
--> c) cAMP-dependent protein phosphorylase
d) cAMP-dependent protein pyruvate
13. If a mutant enzyme is found to have the same KM but a lower Vmax, it
is most likely that energy of the transition state
a) has remained the same
b) has decreased
--> c) has increased
d) has decreased substrate binding
15. The native molecular weight (Mr) and the subunit molecular weight of a
purified protein are best assessed by using ____ and ____, respectively.
--> a) Gel filtration chromatography and SDS Polyacrylamide Gel
Electrophoresis (PAGE)
b) SDS PAGE and gel filtration chromatography
c) Gel filtration chromatography and NMR spectroscopy
d) NMR and SDS PAGE
19. The cell walls of plants consist mainly of cellulose, whereas those of
bacteria consist mainly of
a) lipopolysaccharides without cross-links.
b) cellulose with b(3->6) cross-links.
c) polysaccharides with a(3->6) cross-links.
--> d) polysaccharides with peptide cross-links.
分生題目則有點多..呼呼-.-
小小感想 供參考
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