The term Caucasian race or Caucasian is used to refer to people whose ancestry can be traced back to Europe, North Africa, West Asia, South Asia and parts of Central Asia.It was once considered a useful taxonomical categorization of human racial groups based on a presumed common geographic and/or linguistic origin.ost commonly, when you hear the term Caucasian it is meant as a racial term synonymous with European or white. 2. In its original meaning, the term Caucasian refers to the Caucasus region (which contains the independent states of Armenia, Azerbaijan and Georgia, as well as part of the Russian Federation).
The ribosome (/ËraÉªbÉËsoÊm, -boÊ-/) is a complex molecular machine, found within all living cells, that serves as the site of biological protein synthesis (translation). Ribosomes link amino acids together in the order specified by messenger RNA (mRNA) molecules. Ribosomes consist of two major components: the small ribosomal subunit, which reads the RNA, and the large subunit, which joins amino acids to form a polypeptide chain.
Translation elongation is simply the ribosome travelling down the message, reading codons and bringing in the proper aminoacyl tRNA s to translate the message out to protein.he incoming aminoacyl tRNA is brought into the ribosome A site, where it is matched with the codon being presented. Once it has been secured (by hydrolysis of GTP to fix it in place), the peptidyltransferase reaction occurs.