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Multiple Choice
What is the function of the enzyme primase in DNA replication?
A
It adds nucleotides to the growing DNA strand.
B
It synthesizes RNA primers needed to start DNA synthesis.
C
It unwinds the DNA double helix.
D
It seals gaps between Okazaki fragments.
Verified step by step guidance
1
Understand the role of enzymes in DNA replication: Enzymes are crucial for facilitating various steps in the DNA replication process, each with a specific function.
Identify the function of primase: Primase is an enzyme that synthesizes short RNA sequences called primers.
Recognize the importance of RNA primers: These RNA primers provide a starting point for DNA polymerase to begin adding DNA nucleotides.
Differentiate primase from other enzymes: Unlike DNA polymerase, which adds nucleotides to the growing DNA strand, primase specifically synthesizes the RNA primers.
Clarify the sequence of events: Primase acts early in the replication process to lay down RNA primers, which are later extended by DNA polymerase to form a new DNA strand.