DNA holds the plan of an organism and life, but ribosomes are the factories where this plan is translated into proteins that will make up the muscles, transport the substances in or between cells, send and receive signals, trigger chemical reactions, etc.
For the examples, you can take an example of an assembly plant according to your imagination (factories has vehicles that assemble the parts, a meat factory making sausages, factories of multimedia devices ...).
Everything starts at the DNA level. The DNA segment that carries the genetic code of a given protein is copied to a single-stranded messenger ribonucleic acid (mRNA). The mRNA attaches to a ribosome, which moves throughout the mRNA molecule by "reading" the genetic code. Each block of three "letters" corresponds to the genetic code of one of the amino acids used to make the proteins. Molecules of another type of RNA, the RNA transfer (tRNA), recognize this genetic code and provide the ribosome with the corresponding amino acid. As the ribosome travels along the mRNA, it links the amino acids into a chain, gradually making the protein.
