【判断题】In E. coli, DNA replication begins at a unique site, oriC, in the genome.
【单选题】黄女士,22岁。服敌百虫农药中毒,双侧瞳孔缩小,排尿有大蒜味,来急诊就诊后立即进行洗胃,最佳的洗胃液是
【单选题】A mutant of E. coli with a heat-sensitive DNA ligase (25℃ permissive, 37℃ nonpermissive) has been used to show that DNA synthesis is discontinuous. Examination of DNA replication in the presence of [3...
A.
The accumulation of short segments of unlabeled DNA at 25 ℃ and at 37 ℃ .
B.
The accumulation of short segments of unlabeled DNA at 25 ℃ but not at 37 ℃ .
C.
The accumulation of short segments of radioactive DNA at 37 ℃ but not at 25 ℃.
D.
The incorporation of short fragments of radioactive DNA into longer ones at 25 ℃ and at 37 ℃ .
【单选题】根据我国《保险公估机构监管规定》,( )给保险公估从业人员颁发《保险公估从业人员执业证书》。
【单选题】Which of the following is the primase that synthesizes primers during DNA replication in E. coli?
【单选题】黄女士,22岁。服敌百虫农药中毒,双侧瞳孔缩小,排尿有大蒜味,来急诊就诊后立即进行洗胃,最佳的洗胃液是
【多选题】安全流变突变模型整个系统分为( )几个层次。
【单选题】根据保险公估机构监管规定,保险公估从业人员上岗前接受培训的时间不得少于80小时,上岗后每人每年接受培训和教育的时间累计不得少于36小时,其中接受法律知识培训及职业道德教育的时间不得少于( )小时
【单选题】DNA replication results in:
B.
Two new daughter strands