题目内容

DNA polymerases are enzymes that copy（）

A. DNA
B. into DNA
C. B．DNA
D. into RNA
E. C．RNA
F. into DNA
G. D．RNA
H. into RNA

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研究限制性内切核酸酶而获得1978年诺贝尔奖的科学家是（）

A. Sanger
B. F
C. B．Arber W. and Smith H. O
D. C．Crick
E. D．Lederberg J

发现核酶（ribozyme）的学者是（）

A. Jacob and Monod
B. Wilmut and Pauling
C. Watson and Crick
D. Cech and Altman

In eukaryotic
cells, the genetic material is found in the（）In eukaryotic
cells, the genetic material is found in the（）

A. ribosomes
B. nucleus
C. endoplasmic
D. reticulum
E. D．cytoplasm

During replication, proofreading of the newly
synthesized DNA is performed by（）During replication, proofreading of the newly
synthesized DNA is performed by（）

A. RNA
B. polymerase
C. B．reverse
D. transcriptase
E. C．topoisomerase
F. D．DNA
G. polymerase