The document describes the processes of transcription and translation. During transcription, RNA polymerase copies a section of DNA to make mRNA. The mRNA then exits the nucleus and moves to the cytoplasm. During translation, the mRNA binds to ribosomes which read the mRNA sequence and translate it into a chain of amino acids to form a protein. The key steps are transcription of DNA to mRNA in the nucleus, export of mRNA to the cytoplasm, and translation of mRNA into protein by ribosomes.