
AP Bio: Instructor - lead DNA replication
Authored by Renata Stojanova
Biology
10th Grade
NGSS covered
Used 3+ times

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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
...by the enzyme
ligase
primase
RNA polymerase
helicase
DNA polymerase
2.
DRAG AND DROP QUESTION
1 min • 1 pt
The leading strand is synthesized (a) towards the (b) and the lagging strand is synthesized (c) away from the replication fork.
3.
DRAG AND DROP QUESTION
1 min • 1 pt
DNA replication begins at a predetermined place in the sequence. The (a) bonds between the complementary bases are broken and a gap called a “replication bubble” forms. Helicase continues the breaking/ (b) of the double helix and creates replication forks. (c) relaxes the coiled DNA ahead of the replication fork. Once unzipped, the original DNA strands serve as (d) for the building of the new complementary strands. (e) DNA strands are synthesized by the enzyme DNA polymerase in the 5’ to 3’ direction.
4.
DRAG AND DROP QUESTION
1 min • 1 pt
Primase adds a primer on the template strands. (a) knows to start synthesizing there. DNA polymerase adds new nucleotides continuously in the leading strand and discontinuously in the lagging strand. Leading strand is synthesized in the (b) direction that the replication fork is opening. The lagging strand is synthesized in Okazaki fragments in the (c) direction that the replication fork is opening. Imagine this as a back-tracking. Since new DNA is synthesized away from the replication fork, there is a sort off jumping backwards once the fork has (d) up some more. These fragments are eventually bound with the help of ligase (another (e) ).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The picture below shows an enzyme unwinding and unzipping DNA.
What is the name of this enzyme?
DNA Helicase
DNA Ligase
DNA polyermase
RNA Polymerase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which letter in the picture below depicts the lagging strand in DNA replication?
A
C
B
None of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which letter in the picture below depicts the leading strand in DNA replication?
A
C
B
None of the above
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