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单选题 The presence of a plasmid in a bacterial culture is usually determined by
学科：默认课程
时间：2026-05-24 00:02:13
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题目1单选题
The essetial intiator protein at: the E. coli origin of replication isA. DnaAB. DnaBC. DnaCD. DnaE
题目2单选题
The presence of a plasmid in a bacterial culture is usually determined byA. blue-white screeningB. growth in the presence of an antibioticC. a restriction enzyme digestD. agarose gel electrophoresis
题目3单选题
In prokaryotes the lagging strand primers are removed byA. 3' to 5' exonucleaseB. DNA ligaseC. DNA polymerase ID. DNA polymerase II
题目4单选题
The number of renicons in a typical mammalian cell isA. 40-200B. 400C. 1000-2000D. 50000-100000
题目5判断题
DNA polymerase Ш is used to replace RNA primers with DNAA. 正确B. 错误
题目6判断题
DNA polymerase Ш has the ability to correct most of its mistakeA. 正确B. 错误
题目7判断题
Initiation of DNA replication in E.coli occurs at a DNA sequence called DnaAA. 正确B. 错误
题目8判断题
Telomerase contains a short piece of RNAA. 正确B. 错误
题目9判断题
Okazaki fragments are never joined togetherA. 正确B. 错误
题目10判断题
There is one origin of replication in pro and euA. 正确B. 错误
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