Ch 16 17

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Campbell Biology
Chapters 16, 17
DNA
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1

DNA polymerase

catalyzes the elongation of the new DNA strand.

2

Primase

catalyzes the formation of an RNA primer.

3

DNA Ligase

joins Ozaki fragments (DNA segments) into a continuous strand.

4

Helicase

unwinds/relaxes DNA double helix.

5

Nuclease

Nucleases are enzymes that cut DNA for repair.

6

DNA polymerase III

An enzyme that enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction

7

Topoisomerase

Relieves strain in the DNA ahead of the replication fork

8

Histone

...

9

The promoter

the region of DNA at which the process of transcription begins.

10

The direction of synthesis of an RNA transcript is _____.

5' --> 3'