Question

RNA polymerase II synthesizes most ribosomal RNA's.
1) True
2) False

Answer 1

No, RNA polymerase II does not synthesize most ribosomal RNAs (rRNAs). RNA polymerase I and RNA polymerase III are responsible for synthesizing different types of rRNAs and tRNAs, respectively. Hence, the statement is 2) false.

Step-by-step explanation:

No, RNA polymerase II does not synthesize most ribosomal RNAs (rRNAs). RNA polymerase I synthesizes 18S, 5.8S, and 28S rRNAs, and RNA polymerase III synthesizes tRNAs and 5S rRNAs.

Ribosomal RNAs (rRNAs) are considered structural RNAs because they are not translated into protein. They are components of the ribosome and are essential for the process of translation.

RNA polymerase II, on the other hand, synthesizes all protein-coding nuclear pre-mRNAs, which undergo extensive processing to become mature mRNAs.