Why is DNA turned into RNA?

DNA stands for deoxyribo-nucleic acid. It is the extremely long molecule that contains the body's genetic code. When copying a gene to make a protein, a strand of ribo-nucleic acid is made - RNA. There are three types of RNA: Messenger, Tranfer and Ribosomal. in microbes (usually bacteria0, the genetic material isn't contained within a nucleus. You should research what a plasmid is to clarify your question.