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11. Reverse transcriptase produces
A. DNA from peptides
B. RNA from DNA
C. RNA from RNA
D. DNA from RNA
12. The nicks or gaps between Okazaki fragments are eventually sealed by
A. gyrase
B. DNA ligase
C. RNA ligase
D. polymerase
13. Nucleosome is
A. an octamer of four histones with H1 protein
B. an hexamer of three histones with H1 protein
C. an hexamer of three histones without H1 protein
D. an octamer of four histones without H1 protein
14. The DNA polymerase in bacteria, responsible for DNA synthesis is
A. Polymerase I
B. Polymerase II
C. Polymerase III
D. all of these
15. In a typical electrophoresis experiment, larger fragments of DNA move more
A. slowly, so they appear nearer the top of a gel photograph
B. quickly, so they appear nearer the top of a gel photograph
C. slowly, so they appear nearer the bottom of a gel photograph
D. quickly, so they appear nearer the bottom of a gel photograph
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