Question

which of these is responsible for catalyzing the formation of an rna primer?
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single - strand binding protein is responsible for keeping unpaired dna strands apart.

Explanation:

In DNA replication, primase is the enzyme that catalyzes the formation of an RNA primer. If in the given diagram, the structure labeled as a certain option (assuming based on standard diagrams where primase is often depicted as a specific component - though without seeing exact labels clearly, but going by common knowledge of replication machinery roles).

Answer:

Assuming the correct label (if C is primase in the diagram as per standard - since no clear labels but going by common replication enzyme roles), the answer is C.