Ribosomes are tiny structures found in all living cells, acting like factories that produce proteins. They read the genetic instructions carried by messenger RNA (mRNA) and assemble amino acids into proteins, which are essential for various functions in the body. Without ribosomes, cells wouldn't be able to create the proteins needed for growth, repair, and overall health. These remarkable machines can be found floating freely in the cytoplasm or attached to the endoplasmic reticulum, a network of membranes within the cell. Ribosomes are made up of ribosomal RNA (rRNA) and proteins, working together to ensure that the process of protein synthesis runs smoothly and efficiently.