Answer:
The correct answer is -
1. transcription 2. nucleus, 3. RNA polymerases, 4. messenger, 5. introns 6. gene or exons.
Step-by-step explanation:
Protein synthesis is a two-stage process, transcription, and translation. Transcription is the first stage that takes place in the nucleus of eukaryotic organisms.
The enzyme RNA polymerase is the essential enzyme for this process which helps in copying nucleotides from DNA to get out of RNA, The end product of this process is called messenger RNA or mRNA. Introns are the non-essential part of the mRNA as they are not part of the coding protein and hence cut out from the sequence by the process called RNA splicing. The remaining part of the mRNA is called gene and the part of the gene code for the building protein called exons.