Why is there no RNA in nucleus?

Perhaps this isn't exactly the answer you are looking for, but the answer is that RNA does exist in the nucleus — it has to come from somewhere, before it can exist + function elsewhere in the cell! Think rRNA, tRNA, and of course mRNA. read more

Perhaps this isn't exactly the answer you are looking for, but the answer is that RNA does exist in the nucleus — it has to come from somewhere, before it can exist + function elsewhere in the cell! read more

As for why the RNA doesn't remain in the nucleus: it could, hypothetically, in that there's no reason for anything in the cell to go anywhere; but RNA doesn't remain in the nucleus. All three types of RNA predominantly have protein synthesis roles, and this is something which occurs in the RER or in the cytosol. read more

RNA is found both inside and outside the nucleus. During transcription, RNA is synthesized inside the nucleus. Outside the nucleus it remains as different forms of RNA in the cytoplasm,e.g., ribosomal RNA. read more

tRNA performs its function in cytoplasm. its function if to transfer amino acid to the protein synthetic mechinery i.e. ribosome, which is present in cytoplasm. read more

They originated in the nucleus. The RNA world became the protein world when translation had been invented and the cytosol was added for protein synthesis. Only mRNA had to be exported for this, in addition to the translation apparatus with all its components. read more

In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel or seed) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others have many. read more