题目内容

Bacterial DNA can be transcribed into five types of RNA. Which type of RNAmediates synthesis of a new DNA chain in replication?

A. RNA primer ;
B. rRNA;
C. mRNA;
D. tRNA

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Which statement about transfer of bacterial genetic information is not right?

A. Most phenotypes are determined by the transfer of genetic information.
B. It makes up the central dogma of genetics in bacteria cells.
C. Promoter binds the ribosome to initiate the translation of polypeptide.
DNA transcribed into mRNA, which is translated to form polypeptides.

Which statement about replication of bacterial chromosome DNA is not right?

A. Each of the two DNA strands serves as a template for the synthesis of a new, complementary strand.
B. The synthesis of new DNA strand is in direction from 3` terminus to 5` end.
C. The synthesis of the lagging strand is discontinuous.
DNA polymerase III catalyzes synthesis of new DNA strand

Which enzyme folds the bacterial chromosome into supercoiled form?

A. RNA polymerase;
B. DNA polymerase;
C. nuclease
D. gyrase;

Which statement about bacterial chromosome is not right?

A. Most bacterial chromosome is a haploid genome.
B. The bacterial chromosome folds to be supercoils like a skein of yarn.
C. The bacterial chromosome is located in the nucleoid.
D. The chromosome of Vibrio cholera is of diploid genome.

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