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.
Translation occurs at ribosomes which are made of rRNA (ribosomal) and protein (it seems 3 types of rRNA and about 60-70 proteins are needed; rRNA makes up half the weight). Ribosomes must be assembled from several subunits (which are identified by their density measured in Svedburg units, S).RNA is not unique to humans. rRNA is the primary constituent of ribosomesâthose organelles which convert the genetic code into proteins in all living things. Comparisons of rRNA gene sequences link all living things, even those as different as prokaryotic cells and humans, in the same family tree.