Answer: -forms an important part of both subunits of the ribosome
What is the role rRNA?

As the building-blocks for the organelle production of rRNA is ultimately the rate-limiting step in the synthesis of a ribosome. In the nucleolus rRNA is synthesized by RNA polymerase I using the specialty genes (rDNA) that encode for it which are found repeatedly throughout the genome. The genes coding for 18S 28S and 5.8S rRNA are located in the nucleolus organizer region and are transcribed into large precursor rRNA (pre-rRNA) molecules by RNA polymerase I. These pre-rRNA molecules are separated …

Each nucleotide in RNA contains a ribose sugar with carbons numbered 1' through 5'. A base is attached to the 1' position in general adenine (A) cytosine (C) guanine (G) or uracil (U). Adenine and guanine are purines cytosine and uracil are pyrimidines. A phosphate group is attached to the 3' position of one ribose and the 5' position of the next. The phosphate groups have a n...


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