【简答题】在 DNA 复制解链过程中,需 ATP 供能的酶是 _____ ______ 和 ______________ 。
【单选题】下图为真核细胞DNA复制过程的模式图,下列相关叙述错误的是 [ ]
A.
由图示得知,DNA分子复制的方式是半保留复制
B.
DNA解旋酶能使双链DNA解开,且需要消耗ATP
【单选题】The new constitution will outlaw ______ in employment, housing, and education.
【单选题】The new Constitution was singed in ( ).
【单选题】The Anti-Federalists were against the new Constitution because they were afraid that
A.
the new government would be too strong
B.
the president might evolve into a new monarch
C.
individual rights and liberties were not given explicit and sufficient protection.
【判断题】人体触电时,通过人体电流的大小和通电时间的长短是电击事故严重程度的基本决定因素,当通电电流与通电时间之乘积达到30mA〃1s时即可使人致死。()