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伦敦国王学院的（）研究小组用X-射线衍射的方法研究核酸的结构，并取得了很多有意义的成果

A. Maurice Wilkins
B. Rosalind Franklin
C. David
D. Baltimore
E. D．James Watson

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On the E. coli chromosome, oriC（）

A. encodes
B. DNA polymerase I
C. B．is
D. a binding site for histone proteins
E. C．is
F. the start site for replication
G. D．encodes
H. an RNA primer

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In bacteria such as E. coli, replication of
the chromosome is（）In bacteria such as E. coli, replication of
the chromosome is（）

A. semidiscontinuous
B. and bi-directional
C. B．discontinuous
D. and unidirectional
E. C．continuous
F. and bi-directional
G. D．semidiscontinuous
H. and unidirectional

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The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strand
of DNA（）The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strand
of DNA（）

A. 5’-C
B. C A C T G G-3’
C. B．3’-C C A C T G G-5’
D. C．5’-G G T C A C C-3’
E. D．3’-G G T G A C C-5’

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The enzyme that unwinds the double helix to
facilitate replication is（）The enzyme that unwinds the double helix to
facilitate replication is（）

A. 3 ’ 5 ’exonuclease
B. DNA
C. helicase
D. C．DNA
E. polymerase
F. D．topoisomerase

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伦敦国王学院的（）研究小组用X-射线衍射的方法研究核酸的结构，并取得了很多有意义的成果

A. Maurice Wilkins B. Rosalind Franklin C. David D. Baltimore E. D．James Watson

On the E. coli chromosome, oriC（）

In bacteria such as E. coli, replication ofthe chromosome is（）In bacteria such as E. coli, replication ofthe chromosome is（）

The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strandof DNA（）The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strandof DNA（）

The enzyme that unwinds the double helix tofacilitate replication is（）The enzyme that unwinds the double helix tofacilitate replication is（）

A. Maurice Wilkins
B. Rosalind Franklin
C. David
D. Baltimore
E. D．James Watson

In bacteria such as E. coli, replication of
the chromosome is（）In bacteria such as E. coli, replication of
the chromosome is（）

The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strand
of DNA（）The sequence of nucleotides in one strand of DNA is5’-C C A C T G G-3’, What is the sequence of the complimentary strand
of DNA（）

The enzyme that unwinds the double helix to
facilitate replication is（）The enzyme that unwinds the double helix to
facilitate replication is（）