RNA polymerase adds ribonucleotides onto the 3' end of a growing RNA by forming phosphodiester bonds.
In the field of biology, RNA polymerase can be described as an enzyme that adds ribonucleotides to the RNA in order for the synthesis of RNA to occur. The direction of working for the RNA polymerase is only from the 5' to the 3' direction. This means that the RNA polymerase can add ribonucleotides only to the 3' end and not the 5' end.
The ribonucleotides join together for RNA synthesis using the phosphodiester bonds. By phosphodiester bond, the RNA polymerase forms a bond between the 3' carbon of one sugar to the 5; atom of the other sugar.
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