【单选题】【消耗次数:1】
核糖体的E位点是().
A.真核mRNA加工位点
B.?tRNA离开原核生物核糖体的位点
C.核糖体中受EcoRI限制的位点
D.电化学电势驱动转运的位点
参考答案:
复制
纠错
相关题目
【单选题】 12蛋白质合成起始时模板mRNA首先结合于核糖体上的位点是
①  30S亚基的蛋白
②  30S亚基的rRNA
③  50S亚基的rRNA
④  50S亚基的蛋白
【单选题】 原核微生物细胞核糖体大小为
①  30S
②  50S
③  70S
④  80S
【单选题】 原核微生物细胞核糖体大小为
①  30S
②  50S
③  70S
④  80S
【单选题】 58.细胞核的结构中,具有rRNA合成、加工以及核糖体亚基组装等功能的是
①  A.核膜
②  B.核基质
③  C.染色质
④  D.核仁
⑤  E.核骨架
【单选题】 核糖体是蛋白质合成的场所,它的组成是
①  一条DNA和若干种蛋白质
②  一条RNA和若干蛋白质
③  23S和16S两个rRNA
④  大小不同的两个亚基
【单选题】 CVP监测0点位置()
①  病人30度半卧位时腋中线水平
②  病人15度半卧位时腋中线水平
③  病人45度半卧位时腋中线水平
④  病人平卧位时腋中线水平
⑤  病人直立时腋中线水平
【单选题】 点位控制机床是指__的数控机床。
①  仅控制刀具相对于工件的定位点坐标,不规定刀具的运动轨迹。
②  必须采用开环控制
③  刀具沿各坐标轴的运动之间有确定的函数关系
【判断题】 数控冲床属于点位控制机床。
①  正确
②  错误
【单选题】 水环境污染的检测点位以( )为主
【判断题】 臀位,确定胎方位,以骶骨为指示点
①  正确
②  错误
随机题目
【单选题】 36._____ their real economic situations, they got some relief fund from the government.
①  Considering
②  Considered
③  Havingbeenconsidered
④  Beingconsidered
【单选题】 35.No matter how frequently _____ the works of Beethoven always attract a large number of people.
①  performing
②  performed
③  tobeperformed
④  beingperformed
【单选题】 38. In recent years much more emphasis has been put______ developing the students productive skills.
①  onto
②  in
③  over
④  on
【单选题】 39. A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
①  asresults
②  whichresults
③  theresultsofit
④  theresultsofwhich
【单选题】 34.I heard that you really had a wonderful time at Johns birthday party, _____?
①  didntI
②  didntyou
③  hadntyou
④  willyou
【单选题】 37._____ of water makes Death Valley a desert, but it is by no means devoid.
①  Lacking
②  Beinglack
③  Becauseoflack
④  Lack
【单选题】 33.Modern science and technology has _____ communication between people far apart.
①  madeconvenient
②  madeitconvenient
③  madeitconvenientfor
④  madeitconvenientto
【单选题】 31. The professor said he could talk on _____ interested the audience.
①  anytopic
②  whichtopic
③  whichevertopic
④  thetopichethoughtit
【单选题】 32.Under no circumstance _____ to tell lies to parents.
①  childrenareallowed
②  arechildrenallowed
③  childrenwillallow
④  willchildrenallow
【单选题】 40. Many workers were organized to clear away ______remained of the World Trade Center.
①  those
②  that
③  what
④  where