【单选题】In the DNA supercoil, which option is right.
A.
The nucleosome is composed by RNA and H1, H2A, H2B, H3 and H4
B.
The nucleosome is composed by DNA and non-histone proteins
C.
The histone contains H1, H2A, H2B, H3, and H4
D.
All of the above are wrong
【简答题】根据GB/T3730.1-2001,汽车按照使用用途可以分为( )和( )。
【单选题】调动乘坐旅客或装载爆炸品、气体类危险货物、超限货物的车辆时,不准超过()km/h。
【单选题】2019-2020春夏学期《动物繁殖学》线上授课教师是
【单选题】调动乘坐旅客或装载爆炸品、气体类危险货物、超限货物的车辆时,不准超过( ) km/h。
【单选题】All the following statements are true about a nucleosome except:
A.
It contains an octamer core of histones.
B.
It is about 10 nm in diameter.
C.
It is the “string” of the “beads-on-a-string” appearance.
D.
It contains approximately 150 base pairs of DNA.
【单选题】调动乘坐旅客或装载爆炸品、气体类危险货物、超限货物的车辆时,不准超过()km/h.