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【单选题】
有关研究表明，学习的熟练程度达到150%时记忆效果最好。这种在学习达到刚好成诵以后的额外学习被称为（）A.
强化学习
B.
过度学习
C.
附加学习
D.
附属学习
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following statements on DNA replication is CORRECT ?
A.
DNA is synthesized by extending the 3′ end of the primer, because the 3′-OH acts as a nucleophile during catalysis
B.
DNA Pol use s four different active sites to recognize the four different dNTPs when it catalyzes DNA synthesis
C.
DNA Pol does not add rNTP to the 3′ end of the growing DNA strand because rNTP concentrations are too low in cells
D.
During DNA replication, the leading strand and lagging strand are synthesized toward opposite directions and cannot be coordinated
【单选题】DNA replication in eukaryotes:
A.
usually starts at the same place every time
B.
only involve 2 different DNA polymerases
C.
is faster than in bacteria l DNA replication
D.
all of the above are false
【单选题】The primers in DNA replication are
A.
DNA fragments synthesized with DNA as template
B.
DNA fragments synthesized with RNA as template
C.
RNA fragment synthesized with DNA as template
D.
RNA fragments synthesized with RNA as template
E.
Primers still exist in the DNA strand after replication
【简答题】中国FDM技术的开拓者是清华大学的[填空(1)] 。
【多选题】The fidelity of DNA replication is maintained by:
A.
(1) base selection by the polymerase
B.
(2) a 3′→5′ proofreading exonuclease activity that is part of most DNA polymerases
C.
(3) specific repair systems for mismatches left behind after replication
D.
all the above
【简答题】中国FDM技术的开拓者是清华大学的[ ]。A. 颜永年
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