You are attempting to synthesize rRNA in a test tube using DNA isolated from mouse cells.In addition to the template DNA,ribonucleotides,and the necessary transcription factors,you should also add ________ to the test tube.
A)poly-A polymerase
B)RNA polymerase III
C)RNA polymerase II
D)RNA polymerase I

Question

Quizplus · Accepted Answer

RNA polymerase I is responsible for synthesizing rRNA in eukaryotic cells. Therefore, adding RNA polymerase I to the test tube would be necessary for successful synthesis of rRNA. Poly-A polymerase adds poly-A tails to the 3' end of mRNA and RNA polymerase II and III are not involved in rRNA synthesis.

You Are Attempting to Synthesize RRNA in a Test Tube