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 |
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 action of helicase creates _____ |
replication forks and replication bubbles |
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 |
The synthesis of a new strand begins with the synthesis of a(n) _____. |
RNA primer complementary to a preexisting DNA strand |
An old DNA strand is used as a _____ for the assembly of a new DNA strand. |
template |
Short segments of newly synthesized DNA are joined into a continuous strand by _____. |
ligase |
Which of these is responsible for catalyzing the formation of an RNA primer? |
Primase catalyzes the formation of an RNA primer. |
Okazaki Fragments |
are the short sections of DNA that are synthesized on the lagging strand of the replicating DNA |
The new DNA strand that grows continuously in the 5′ to 3′ direction is called the _____. |
leading strand |
During DNA replication, an open section of DNA, in which a DNA polymerase can replicate DNA, is called the _____. |
replication fork |
The enzyme that can replicate DNA is called _____. |
DNA polymerase |
After replication is complete, the new DNAs, called _____, are identical to each other. |
Daughter DNA |
Mastering Biology Ch 16
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