Here’s a 3 we all need. DNA is a molecule that carries most of the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. DNA and RNA are nucleic acids; alongside proteins and complex carbohydrates, they comprise the 3 major types of macromolecule that are essential for all known forms of life. The simple summary is that DNA makes RNA, and then RNA makes proteins. I believe I know a few people that are missing some segments, what about you?
If you want to learn more try wikipedia