Lead poisoning causes sudden pain on either side of the lower back, urinary issues, nausea, fever, and chills. Spinal tumor. Spinal tumors can cause back pain, weakness, and numbness in the legs and arms, and more serious issues. Cat-scratch disease. Cat scratch disease is a bacterial infection caused by a cat scratch or bite.
rRNA itself is transcribed in the nucleolus, where ribosomes are assembled (from rRNA and ribosomal proteins) in totality. Keep in mind though, that the ribosomal proteins are translated from mRNA outside the nucleus and imported back in before they can be used for ribosome assembly in the nucleolus.Click to expand...ll RNA is produced in the nucleus. The thing about rRNA is that it is constitutively expressed. The rRNA genes are encoded for multiple times along the length of the genome.
1 Ribosomal RNA (rRNA) is a component of cell organelles called ribosomes. 2  A ribosome consists of ribosomal proteins and rRNA. 3  Ribosomes are typically composed of two subunits: a large subunit and a small subunit. 4  Ribosomal subunits are synthesized in the nucleus by the nucleolus. Transfer RNA (tRNA) plays an important role in the translation portion of protein synthesis. 2  Its job is to translate the message within the nucleotide sequences of mRNA into specific amino acid sequences.