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【简答题】
根据句意和汉语提示写出单词，完成句子。 小题1: (母亲)Day is on the second Sunday of May. 小题2:Teachers are usually (严格的) with their students in class. 小题3:Tom’s (到达) made all of us very excited. 小题4:Trains （在……之间）cities run faster and faster now. 小题5:Ang Lee won an Oscar for Best (导演)for the film Life of Pi
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举一反三
【单选题】The signal sequence for export from the nucleus is ____________________________.
A.
-Met-Glu-Glu-Leu-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Phe-
B.
-Met-Glu-Glu-Leu-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Tyr-
C.
-Met-Glu-Glu-Leu-Ser-Glu-Ala-Leu-Ala-Ser-Ser-Phe-
D.
-Met-Glu-Glu-Lys-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Phe-
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【单选题】作为总经理,你如何处理公司中存在的非正式组织?( )
A.
在全公司大会上严厉批评，要求不得继续活动
B.
听之任之
C.
提供适宜的环境，鼓励其发展
D.
加以引导使之活动与公司目标相一致
查看完整题目与答案
【单选题】The signal sequence for retention in the lumen of ER is _________________________.
A.
-Lys-Asp-Gly-Leu-COOˉ
B.
-Lys-Asp-Glu-Leu-COO ˉ
C.
-Lys-Asp-Gln-Leu-COO ˉ
D.
-Lys-Asn-Glu-Leu-COO ˉ
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【单选题】What is one function of a signal sequence?
A.
to direct an mRNA molecule into the cisternal space of ER
B.
to bind RNA polymerase to DNA and initiate transcription
C.
to terminate translation of the messenger RNA
D.
to attach ribosomes synthesizing secretory proteins to the ER
查看完整题目与答案
【单选题】The signal sequence for import into the nucleus is _________________________.
A.
-Pro-His-Lys-Lys-Lys-Arg-Lys-Val-
B.
-Ala-Pro-Lys-Lys-Lys-Arg-Lys-Val-
C.
-Pro-Pro-Lys-Lys-Lys-Arg-Lys-Val-
D.
-Pro-Pro-Lys-Lys-Lys-Arg-Lys-Tyr-
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【判断题】The signal sequence that directs a protein from the cytosol into the nucleus is called nuclear localization signal (NLS).
A.
正确
B.
错误
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【单选题】美国直接插手 ( ), 阻挠中国人民完成祖国统一大业 , 致使海峡两岸的中国人至今仍处于分离状态。
A.
台湾问题
B.
朝核问题
C.
香港问题
D.
澳门问题
查看完整题目与答案
【多选题】How is a double-pass transmembrane protein with an internal ER signal sequence retained in the lipid bilayer?
A.
In some transmembrane proteins, an internal, rather than an N-terminal, signal sequence is used to start the protein transfer; this internal signal sequence, called a start-transfer sequence, is never removed from the polypeptide.
B.
This arrangement occurs in some transmembrane proteins in which the polypeptide chain passes back and forth across the lipid bilayer. In these cases, hydrophobic signal sequences are thought to work in pairs: an internal start-transfer sequence serves to initiate translocation, which continues until a stop-transfer sequence is reached; the two hydrophobic sequences are then released into the bilayer, where they remain as membrane-spanning α helices.
C.
In complex multipass proteins, in which many hydrophobic α helices span the bilayer, additional pairs of start- and stop-transfer sequences come into play: one sequence reinitiates translocation further down the polypeptide chain, and the other stops translocation and causes polypeptide release, and so on for subsequent starts and stops.
D.
In this way, multipass membrane proteins are stitched into the lipid bilayer as they are being synthesized, by a mechanism resembling the workings of a sewing machine.
查看完整题目与答案
【单选题】The signal sequence for import into peroxisomes is __________________.
A.
-Ser-Lys-His-
B.
-Pro-Lys-Leu-
C.
-Ser-Lys-Leu-
D.
-Ser-Met-Leu-
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【多选题】下列各项中,应按照“生活服务业”计算缴纳增值税的是( )。
A.
出租文化场所
B.
经营网吧
C.
经营音乐茶座
D.
金融经纪业务
查看完整题目与答案
相关题目：
【单选题】The signal sequence for export from the nucleus is ____________________________.
A.
-Met-Glu-Glu-Leu-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Phe-
B.
-Met-Glu-Glu-Leu-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Tyr-
C.
-Met-Glu-Glu-Leu-Ser-Glu-Ala-Leu-Ala-Ser-Ser-Phe-
D.
-Met-Glu-Glu-Lys-Ser-Gln-Ala-Leu-Ala-Ser-Ser-Phe-
查看完整题目与答案
【单选题】作为总经理,你如何处理公司中存在的非正式组织?( )
A.
在全公司大会上严厉批评，要求不得继续活动
B.
听之任之
C.
提供适宜的环境，鼓励其发展
D.
加以引导使之活动与公司目标相一致
查看完整题目与答案
【单选题】The signal sequence for retention in the lumen of ER is _________________________.
A.
-Lys-Asp-Gly-Leu-COOˉ
B.
-Lys-Asp-Glu-Leu-COO ˉ
C.
-Lys-Asp-Gln-Leu-COO ˉ
D.
-Lys-Asn-Glu-Leu-COO ˉ
查看完整题目与答案
【单选题】What is one function of a signal sequence?
A.
to direct an mRNA molecule into the cisternal space of ER
B.
to bind RNA polymerase to DNA and initiate transcription
C.
to terminate translation of the messenger RNA
D.
to attach ribosomes synthesizing secretory proteins to the ER
查看完整题目与答案
【单选题】The signal sequence for import into the nucleus is _________________________.
A.
-Pro-His-Lys-Lys-Lys-Arg-Lys-Val-
B.
-Ala-Pro-Lys-Lys-Lys-Arg-Lys-Val-
C.
-Pro-Pro-Lys-Lys-Lys-Arg-Lys-Val-
D.
-Pro-Pro-Lys-Lys-Lys-Arg-Lys-Tyr-
查看完整题目与答案
【判断题】The signal sequence that directs a protein from the cytosol into the nucleus is called nuclear localization signal (NLS).
A.
正确
B.
错误
查看完整题目与答案
【单选题】美国直接插手 ( ), 阻挠中国人民完成祖国统一大业 , 致使海峡两岸的中国人至今仍处于分离状态。
A.
台湾问题
B.
朝核问题
C.
香港问题
D.
澳门问题
查看完整题目与答案
【多选题】How is a double-pass transmembrane protein with an internal ER signal sequence retained in the lipid bilayer?
A.
In some transmembrane proteins, an internal, rather than an N-terminal, signal sequence is used to start the protein transfer; this internal signal sequence, called a start-transfer sequence, is never removed from the polypeptide.
B.
This arrangement occurs in some transmembrane proteins in which the polypeptide chain passes back and forth across the lipid bilayer. In these cases, hydrophobic signal sequences are thought to work in pairs: an internal start-transfer sequence serves to initiate translocation, which continues until a stop-transfer sequence is reached; the two hydrophobic sequences are then released into the bilayer, where they remain as membrane-spanning α helices.
C.
In complex multipass proteins, in which many hydrophobic α helices span the bilayer, additional pairs of start- and stop-transfer sequences come into play: one sequence reinitiates translocation further down the polypeptide chain, and the other stops translocation and causes polypeptide release, and so on for subsequent starts and stops.
D.
In this way, multipass membrane proteins are stitched into the lipid bilayer as they are being synthesized, by a mechanism resembling the workings of a sewing machine.
查看完整题目与答案
【单选题】The signal sequence for import into peroxisomes is __________________.
A.
-Ser-Lys-His-
B.
-Pro-Lys-Leu-
C.
-Ser-Lys-Leu-
D.
-Ser-Met-Leu-
查看完整题目与答案
【多选题】下列各项中,应按照“生活服务业”计算缴纳增值税的是( )。
A.
出租文化场所
B.
经营网吧
C.
经营音乐茶座
D.
金融经纪业务
查看完整题目与答案