The ESI #640 DVA adapter is plugged into a digital meter and the voltage range is normally set to about 400V DC for most testing. Trigger, pulser, and timer-base outputs use a lower voltage range.
Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes.he pre-messenger RNA thus formed contains introns which are not required for protein synthesis. The pre-messenger RNA is chopped up to remove the introns and create messenger RNA (mRNA) in a process called RNA splicing (Figure 5).
The genetic code is written in the language of DNA, the four chemical bases-A, C, G and T. However, when it is time to make a protein, the DNA code is converted into RNA before it is translated into protein. This article is an in depth look at the first stage in this process, how RNA is formed from DNA. Before we look at how this happens, let me introduce some terminology; Transcription-The process by which DNA is converted into RNA. Translation-The conversion of RNA into protein. Central Dogma of Molecular Biology-The name given for the whole process, t he idea that information coded in the DNA is converted into RNA and then into protein.