【单选题】味甘气香,能杀虫消积,尤宜用于小儿蛔虫病及小儿疳积的药物是:
【多选题】How does S-Cdk initiate DNA replication and block re-replication?
A.
Like any monumental task, configuring chromosomes for replication requires a certain amount of preparation. For eukaryotic cells, this preparation begins early in G 1 , when DNA is made replication-ready by the recruitment of proteins to the sites along each chromosome where replication will begin. These nucleotide sequences, called origins of replication, serve as landing pads for the proteins and protein complexes that control and carry out DNA synthesis.
B.
One of these protein complexes, called the origin recognition complex (ORC), remains perched on the replication origins throughout the cell cycle. To prepare the DNA for replication, the ORC recruits a protein called Cdc6, whose concentration rises early in G 1 . Together, these proteins load the DNA helicases that will ultimately open up the double helix at the origin of replication. Once this prereplicative complex is in place, the replication origin is loaded and ready to “fire.”
【单选题】列族数据库创建表时_________________
【单选题】电视连续剧《隋唐英雄传》以南北朝后期到唐太宗李世民即位这一时期为历史背景,演绎了隋末唐初出现的著名英雄人物。在这部电视剧中,我们不能看到的情景是
B.
李世民 618 年即位,改年号为 “ 贞观 ”
【单选题】对留置导尿老年人的观察要点包括( )
B.
保持导尿管通畅,避免受压、扭曲、返折、阻塞等异常情况
【简答题】2017 年12月1日,红森公司已经验收入库甲产品10件,实际单位成本1000元,共计10000元;乙产品50件,实际单位成本800元,共计40000元。红森公司如何进行账务处理?
【单选题】( )是Bigtable中访问控制的基本单元
【多选题】Characteristics of DNA replication contain
A.
semi-conservative replication
B.
semi-discontinuous replication
C.
bi-directional replication