Electronics, Appliances, Jewelry Protection More than 60 million customers worldwide rely on us to protect their electronics, appliances and jewelry and other major purchases. Backed by an extensive network of service providers, we help keep your life running smoothly when things go wrong.
Ribosomes consist of two major subunitsâthe small ribosomal subunit reads the mRNA, while the large subunit joins amino acids to form a polypeptide chain. Each subunit is composed of one or more ribosomal RNA (rRNA) molecules and a variety of proteins.
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.