The role of ribosomes in bacteria is to make proteins. Proteins are the workhorses of cells and their function is essential for the survival of any living thing. They are used for many purposes, including metabolic activities, structural support and catalysis. Proteins are made up of amino acids that are strung together like beads on a string. The amino acids are arranged in a specific sequence so that they can be joined together with other proteins to form functional molecules such as enzymes, hormones or antibodies (antibodies attach to foreign matter).
The process by which proteins are made involves mRNA being translated into messenger RNA (mRNA), which then undergoes a series of modifications before it reaches its final form as protein. These modifications include splicing out introns, adding an amino acid sequence at the end and then folding into a structure that enables it to perform its function within the cell.