Question

The element required for the activation of DNA as well as DNA polymerase is

• A. Ca${}^{++}$
• B. Mg${}^{++}$
• C. Cu${}^{++}$
• D. K${}^{+}$

Answer 1

The correct option is B Mg${}^{++}$

• A non-protein chemical that is necessary for the activity of protein/enzyme is known as a co-factor.
• Mg${}^{2+}$ serves as co-factor for DNA polymerase. It activates the DNA polymerase that is used to synthesise the DNA during replication.
• Thus, the correct answer is B.