Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA<span> (tRNA) molecules carry amino acids to the ribosomes during protein synthesis.</span>
Protons electrons and newtrons
<span>The protons and neutrons are located in the nucleus of the atom</span>
Jawless fish. The class Agnatha is a class made up of jawless fish. It excludes all vertebrates with jaws.