The form of RNA that matches amino acids with the bases on messenger RNA is called transfer RNA (tRNA).

Here's how it works:

* mRNA (messenger RNA) carries the genetic code from DNA to the ribosomes, where protein synthesis takes place.

* tRNA acts as a translator, bringing the correct amino acid to the ribosome based on the codon (a sequence of three bases) on the mRNA.

* Each tRNA molecule has a specific anticodon that complements the codon on the mRNA.

* The tRNA also carries the corresponding amino acid, which is added to the growing polypeptide chain.

So, tRNA essentially acts as a bridge between the genetic code in mRNA and the amino acids that make up proteins.