Mastering Biology Ch 16

The enzyme that can replicate DNA is called _____.

DNA polymerase

Why is the new DNA strand complementary to the 3' to 5' strands assembled in short segments?

DNA polymerase can assemble DNA only in the 5' to 3' direction

After replication is complete, the new DNAs, called _____, are identical to each other.

Daughter DNA

Which of these is responsible for catalyzing the formation of an RNA primer?

Primase catalyzes the formation of an RNA primer.

The synthesis of a new strand begins with the synthesis of a(n) _____.

RNA primer complementary to a preexisting DNA strand

Okazaki Fragments

are the short sections of DNA that are synthesized on the lagging strand of the replicating DNA

After DNA replication is completed, _____.

each new DNA double helix consists of one old DNA strand and one new DNA strand

The first step in the replication of DNA is catalyzed by _____.

helicase

The new DNA strand that grows continuously in the 5' to 3' direction is called the _____.

leading strand

Short segments of newly synthesized DNA are joined into a continuous strand by _____.

ligase

During DNA replication, an open section of DNA, in which a DNA polymerase can replicate DNA, is called the _____.

replication fork

The action of helicase creates _____

replication forks and replication bubbles

An old DNA strand is used as a _____ for the assembly of a new DNA strand.

template

In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand.

thymine ... cytosine