Now ribosomal RNA is synthesized in a specific section of the nucleus known as the nucleolus. And once we synthesize our rRNA from the DNA that rRNA can transfer into the cytoplasm and it can combine with special types of proteins to form the ribosomes. So we see that ribosomal RNA are specialized RNA molecules that combine with proteins to form ribosomes. So ribosomes contain RNA and RNA basically form an integral part of these ribosomes. And recall in our discussion on ribosomes we said that ribosomes are the machinery that is used to synthesize our proteins. And finally, let's move on to the final type of RNA known as tRNA, which stands for transfer RNA.