Scelta multipla
Which of the following must happen first in order for DNA replication to occur?
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14. DNA Synthesis
Introduction to DNA Replication
Scelta multipla
What is the first step in eukaryotic DNA replication?
A
Binding of DNA polymerase to the DNA strand
B
Joining of Okazaki fragments by ligase
C
Synthesis of RNA primers by primase
D
Unwinding of the DNA helix by helicase
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Understand that DNA replication is a complex process involving multiple steps and enzymes.
Recognize that the first step in eukaryotic DNA replication is the unwinding of the DNA double helix.
Identify the enzyme responsible for this unwinding process, which is helicase.
Helicase breaks the hydrogen bonds between the base pairs, separating the two strands of DNA to create a replication fork.
This unwinding is essential to allow other enzymes, such as primase and DNA polymerase, to access the single-stranded DNA for replication.
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