首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
There are stars in the Galaxy.We can't count them.（ ）A.billion of B.billions C.billions of D.bi...
查看本题答案
包含此试题的试卷
教案备课库《2015-2016学年天津市津南区东片学区八年级（下）期中英语试卷》真题及答案
点击查看
你可能感兴趣的试题
经酶作用后变为橙黄色的是
HRP
OPD
TMB
AP
β-Gal
半乳糖的简写为
glu
rha
ara
gal
xyl
鼠李糖的简写为
glu
rha
ara
gal
xyl
经酶作用后变为蓝色的是
HRP
OPD
TMB
AP
β-Gal
什么是GAL芯片它能代替哪些芯片
从大肠杆菌或小牛肠黏膜提取的是
HRP
OPD
TMB
AP
β-Gal
下列符号代表可燃探头的是
AT
ASB
GD
GAL
半乳糖的简写为
Glu
Rha
Ara
Gal
Xyl
鼠李糖的简写为
Glu
Rha
Ara
Gal
Xyl
葡萄糖的简写为
Glu
Rha
Ara
Gal
Xyl
下列操纵子能被葡萄糖完全阻遏的有
lac
gal
trp
阿拉伯糖的简写为
Glu
Rha
Ara
Gal
Xyl
β-Gal常用的底物是
OPD
TMB
5-ASA
ABTS
4-MUG
葡萄糖的简写为
glu
rha
ara
gal
xyl
下列符号代表固定式硫化氢探头的是
AT
ASB
GD
GAL
GAL16V8主要有简单型复杂型三种工作模式
λ原噬菌体位于E.coli的gal和bio基因之间而lac和gal基因相距约10分钟问得到lac-g
GAL的与或阵列固定
为了得到一个基因型trp-gal-lac+strr的菌株可将现有实验室的基因型F-trp-lac-s
F
-
gal
-
lac
-
F
-
gal
-
lac
+
Hfrgal
-
lac
+
Hfrgal
+
lac
-
说明gal操纵子的特点
热门试题
更多
幸亏有了你的帮助我们才能按时完成这个项目.yourhelpwecanfinishthisprojectontime.
WheredidJimenjoylastnightAtLily'sbirthdayparty.A.itself B.himself C.myself D.yourself
—WhatruledoIhavetokeepwhileworkinghere?—youmustalwayswearyouruniform.A.Bytheway B.Fromthenon C.Believeitornot D.Firstofall
Acow重manytimesthanasheep.
老师们认为压力太大不利于学生的均衡发展.Theteacherthinkthattoomuchisbadforthebalancedofthestudents.
Irememberthemedicinethismorning.ButwhydoIstillhaveaheadache?A. totake B. taking C. havetaken D. take
DidyoudecidewhenYestomorrowmorning.A.toleave B.tobeleavingC.willyouleave D.areyouleaving
Thankyouforcomingtodaytoattendthegraduateceremony.
LiMingworksforthepanda研究.
It'sveryhardtosfromthosewhomyouhavespentsomuchtimewithforthelastthreeyears.
WhatannoysyouMaryItannoysmewhenmyfriendsandneverreturnit.A.lendmemoney B.borrowmymoneyfrommeC.borrowthebooks D.lendmebooks
Mymathteacheralwaystakestimedifficultproblemstous.A.explain B.toexplain C.explained D.explaining
Ourparentscanprovideuswithcomfortableenvironment.同义句转换Ourparentscancomfortableenvironmentus.
﹣Ifeelstressedfromtimetotime.Couldyougivemesomeadvice﹣sharingyourworrieswithyourparentsA.Whydon'tyou B.HowaboutC.Couldyouplease D.Wouldyoulike
InSwitzerlandthingslikeglassandplasticintodifferentgroupsandthenrecycled.A.separate B.separatedC.isseparated D.areseparated
Thestudentsarealwaysfullofenergyandforknowledge.
CouldIhangoutwithmyfriends作否定回答No.
OfalltheanimalsIlikepandasbecausetheyarereallycute. A.well B.good C.better D.best
Whenweonthisprojectweknewitwouldbedifficult.A.putout B.giveout C.setout D.workout
WhyareyousoIheardthenewsjustnow.A.excitingexciting B.excitingexcitedC.excitedexcited D.excitedexciting
Howtimeflies!ItthreeyearssinceIyoulasttime. A.hasbeen;met B.was;met C.hasbeen;havemet D.was;havemet
MyfatheroftentellsmehowremembertheEnglishwordsquickly.
Mr.Leeguidedmealotbetterinscience. A.do B.todo C.doing D.done
Toworkwithforeignersinthisinternationalcompanyyouarerequiredtohaveabachelor's inEnglish.
你可以跟他聊聊帮他走出目前的困境.Youcanhimbychattingwithhim.
.Ihaveastomachache.AndIdon'tfeellikeeatinganything.A.DoyouhaveastomachacheB.HowareyoutodayC.What'sthematterwithyouD.Areyoufeelingwell
Taobao.comisoneofshoppingwebsitesinChina. A.large B.larger C.largest D.thelargest
Aftershewonthecompetitionallthepeoplecher.
﹣IhaveinlearningEnglishandI'msoworried.Couldyouhelpmewithit﹣SureI'dloveto.A.joy B.interest C.trouble D.fun
﹣DadwhymustIstopcomputergames﹣Foryourhealthmyboy.A.play B.toplay C.toplaying D.playing
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一上学期英语
湘公网安备 43130202000226号