WHAT IS IEC 60601-1. IEC 60601 is a series of technical standards. for the safety and effectiveness of medical. electrical equipment. The primary standard governing medical device. design is IEC 60601-1 (medical electrical equipment. - Part 1: general requirements for basic safety and. essential performance).
Figure 1: A gene is expressed through the processes of transcription and translation. 1  During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink).
1 When RNA polymerase transcribes the DNA into a mRNA molecule, adenine pairs with uracil and cytosine pairs with guanine (A-U and C-G). 2  At the end of transcription, mRNA is transported to the cytoplasm for the completion of protein synthesis. Transfer RNA (tRNA) plays an important role in the translation portion of protein synthesis. 2  Its job is to translate the message within the nucleotide sequences of mRNA into specific amino acid sequences. 3  The amino acid sequences are joined together to form a protein.