【多选题】What is human retrotransposon L1 element?
A.
One abundant human retrotransposon, the L1 element (sometimes referred to as LINE-1, a long interspersed nuclear element), is transcribed into RNA by a host cell’s RNA polymerase.
B.
A double-stranded DNA copy of this RNA is then made using an enzyme called reverse transcriptase, an unusual DNA polymerase that can use RNA as a template.
C.
The reverse transcriptase is encoded by the L1 element itself.
D.
The DNA copy of the element is then free to reintegrate into another site in the genome.
【单选题】房地产经纪人必须掌握良好的人际沟通技能,其人际沟通技能的内容不包括( )。
B.
适当运用向对方传达意思方式(如语言、表情、身体动作等)的技能
【简答题】What is symmetry element and what is symmetry operaion?
【单选题】房地产经纪人的人际沟通技能的内容不包括( )。
【单选题】What is not the element in defining language?
【简答题】What element will help fight against age spots and wrinkles? ______________________________.
【简答题】What element enables the ceramic tape to lower its temperature?
【简答题】What does the man say about an element of stress in his job?