The document summarizes the process of transcription and translation in protein synthesis. [1] Transcription occurs in the cell nucleus, where RNA polymerase uses DNA as a template to produce mRNA. [2] The mRNA exits the nucleus and moves to the cytoplasm, where it binds to ribosomes. [3] Translation then occurs, as the ribosome reads the mRNA and pairs tRNAs with their complementary anticodons to add amino acids in the specified order and produce a polypeptide chain.