Question

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.
multiple choice
rna polymerase i
poly - a polymerase
rna polymerase iii
rna polymerase ii

Explanation:

In eukaryotes, RNA polymerase I is responsible for transcribing most ribosomal RNA (rRNA) genes. Poly - A polymerase is involved in adding poly - A tails to mRNA. RNA polymerase II transcribes protein - coding genes (mRNA) and some non - coding RNAs. RNA polymerase III transcribes small non - coding RNAs like tRNA and 5S rRNA. Since we are synthesizing rRNA, we need RNA polymerase I.

Answer:

A. RNA polymerase I