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Home Q & A Board Biology-Related Homework Help Cell Biology
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datoledo88 datoledo88
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11 years ago
Why is an RNA primer considered essential for DNA synthesis by DNA polymerase III?

A) DNA Polymerase III requires a free 3'-OH group to begin synthesis of DNA.
B) DNA Polymerase III requires a free 3'-Phosphate group to begin synthesis of DNA.
C) DNA Polymerase III requires a free 5'-OH group to begin synthesis of DNA.
D) DNA Polymerase III requires a free 5'-Phosphate group to begin synthesis of DNA.
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#1
11 years ago
The answer is (A), because DNA Polymerase (not just III, but ALL known DNA polymerases) requires a free 3'-OH to begin DNA synthesis.
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