Multiple Choice
Which enzyme is required to initiate DNA synthesis on a bare template strand?
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14. DNA Synthesis
DNA Polymerases
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What is the primary function of DNA Polymerase I in prokaryotic cells?
A
To unwind the DNA double helix
B
To join Okazaki fragments on the lagging strand
C
To remove RNA primers and replace them with DNA nucleotides
D
To synthesize RNA primers during DNA replication
Verified step by step guidance1
Understand the role of DNA Polymerase I in prokaryotic cells. It is an enzyme involved in DNA replication.
Recognize that during DNA replication, RNA primers are initially laid down to start the synthesis of new DNA strands.
DNA Polymerase I is responsible for removing these RNA primers once they have served their purpose.
After removing the RNA primers, DNA Polymerase I replaces them with DNA nucleotides, ensuring the continuity of the DNA strand.
This function is crucial for the accurate replication of DNA, as it ensures that the newly synthesized DNA strand is composed entirely of DNA nucleotides.
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