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【单选题】
气性坏疽的主要病原菌是A.
坏死梭菌
B.
溶组织梭菌
C.
产气膜梭菌
D.
败毒梭菌
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】在2019.08以前使用
【单选题】The first complete DNA sequence of a non-viral, free-living organism was obtained for:
A.
a bacterium in 1900.
B.
a bacterium in 1945.
C.
a bacterium in 1995.
D.
humans in 1990.
E.
humans in 2000.
【单选题】按基金的组织形式不同,证券投资基金可分为( )
A.
契约型基金和公司型基金
B.
封闭式基金和开放式基金
C.
国债基金、股票基金、货币市场基金
D.
成长型基金、收入型基金和平衡型基金
【单选题】A sequence of 3 bases in DNA has the sequence CGT. What is the corresponding tRNA anticodon for this sequence? ( )
A.
CGT
B.
GCA
C.
CGU
D.
UCG
【单选题】If the DNA strand, 5'—GCTATGCATCGTGATCGAATTGCGT—3', serves as a template for the synthesis of RNA , which of the following choices gives the sequence and polarity of the newly synthesized RNA?
A.
5'—ACGCAATTCGATCACGATGCATAGC—3'
B.
5'—UGCGUUAAGCUAGUGCUACGUAUCG—3'
C.
5'—ACGCAAUUCGAUCACGAUGCAUAGC—3'
D.
5'—CGAUACGUAGCACUAGCUUAACGCA—3'
E.
5'—GCTATGCATCGTGATCGAATTGCGT—3'
【单选题】Certain drugs inhibit bacterial RNA synthesis. If the DNA strand 5 ′– GCTATGCATCGTGATC GAATTGCGT – 3 ′ serves as a template for the synthesis of RNA, which one of the following choices gives the seque...
A.
5 ′– ACGCAATTCGATCACGATGCATAGC – 3 ′
B.
5 ′– UGCGUUAAGCUAGUGCUACGUAUCG – 3 ′
C.
5 ′– ACGCAAUUCGAUCACGAUGCAUAGC – 3 ′
D.
5 ′– CGAUACGUAGCACUAGCUUAACGCA – 3 ′
E.
5 ′– GCTATGCATCGTGATCGAATTGCGT – 3 ′
【单选题】按基金的组织形式不同,证券投资基金可分为
A.
债券基金、股票基金、货币市场基金
B.
封闭式基金与开放式基金
C.
成长型基金与收入型基金
D.
契约型基金与公司型基金
【单选题】In 1956, Arthur Kornberg and colleagues discovered DNA polymerase I (Pol I), in Escherichia coli . They described the DNA replication process by which DNA polymerase copies the base sequence of a temp...
A.
1957
B.
1958
C.
1959
D.
1960
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