题目内容

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

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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

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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

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Based on the experiments in this activity, which of
the following is true about E. coli replication（）Based on the experiments in this activity, which of
the following is true about E. coli replication（）

A. Replication begins at a single site on the
B. chromosome
C. B．Replication
D. is bidirectional
E. C．Synthesis
F. begins at specific sites on the template strand
G. D．All
H. of the above

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Prokaryotic chromosomes consist mostly of（）

A. unique
B. sequence DNA only
C. B．repetitive
D. sequence DNA only
E. C．either
F. unique sequence or repetitive sequence DNA
G. D．both
H. unique sequence and repetitive sequence

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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 eukaryoticcells, the genetic material is found in the（）In eukaryoticcells, the genetic material is found in the（）

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

Based on the experiments in this activity, which ofthe following is true about E. coli replication（）Based on the experiments in this activity, which ofthe following is true about E. coli replication（）

Prokaryotic chromosomes consist mostly of（）

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（）

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

Based on the experiments in this activity, which of
the following is true about E. coli replication（）Based on the experiments in this activity, which of
the following is true about E. coli replication（）