In transcription, each added ribonucleotide comes into the RNA polymerase complex as a:
A)nucleoside.
B)nucleoside monophosphate.
C)nucleoside diphosphate.
D)nucleoside triphosphate.

Question

Quizplus · Accepted Answer

Ribonucleotides are added to a growing RNA chain during transcription as nucleoside triphosphates, with the release of pyrophosphate. This triphosphate group provides the energy necessary for the reaction to occur. Thus, the correct choice is D, nucleoside triphosphate.

In Transcription, Each Added Ribonucleotide Comes into the RNA Polymerase