The process that takes place in ribosomes of a cell is protein synthesis. Ribosomes are cellular structures that are responsible for the synthesis of proteins. They are composed of RNA molecules and proteins, and they are found in all living cells. Ribosomes read the genetic information encoded in messenger RNA (mRNA) molecules and use this information to assemble amino acids into proteins. The process of protein synthesis is essential for the proper functioning of cells, as proteins are involved in a wide range of cellular functions, including metabolism, cell signalling, and structural support.