And as we discussed in the previous lecture there are three types of RNA molecules and each type of RNA molecule serves its own unique purpose in protein synthesis. Now, we see that the DNA is basically first transcribed into our RNA so we undergo the process of transcription in which we synthesize RNA from DNA and then the RNA molecule is directly involved in the process of protein synthesis. So in a way we can imagine that the process of transcription is the passing down of the genetic information from the DNA molecule to the RNA molecule. Now the question is why can't we use our DNA molecule to directly synthesize our proteins? Why do we have to use these intermediate RNA molecules? Well, the answer is pretty simple.