9 How does DNA synthesize protein? Transcription – DNA makes a copy of itself that can leave the nucleus. This copy is called messenger RNA (mRNA). It is exactly the same as DNA except for one thing; instead of the nitrogenous base thymine, all RNA has the nitrogenous base uracil (U).The newly created mRNA then leaves the nucleus in search of a ribosome. Why does it need to find a ribosome?
10 How does DNA synthesize protein? Translation – Once it reaches a ribosome (rRNA), it waits for its partner transfer RNA (tRNA) to bring in the appropriate amino acid.The mRNA knows which amino acid to synthesize because its codon binds with an anticodon on the tRNA molecule.