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利用表格制作如图5.6所示的网页。网页中所用的图片假定己存放在站点的pictures文件夹中。
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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-
【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
【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
【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
【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-
【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
【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.
【单选题】From the failure of EuroDisney we can learn that
A.
Europeans don't like Disney's cartoon characters.
B.
American and European cultures are not convergent at all.
C.
America and Europe have not so much in common as the company thought.
D.
not all people around the world like cartoons.
【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-
相关题目：
【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
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