As you have learned, information flow in an organism takes place from DNA to RNA to protein:
- DNA is transcribed to RNA via complementary base pairing rules (but with U instead of T in the transcript)
- The RNA transcript, specifically mRNA, is then translated to an amino acid polypeptide
- Final folding and modifications of the polypeptide lead to functional proteins that actually do things in cells
This is known as the Central Dogma of Life, which holds true for all organisms.