【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】Nucleosome contains DNA wrapped around a protein core of ( ) histones molecules.
【单选题】The bead of each nucleosome contains eight histone molecules: two copies each of ____________________.
【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.