Anticodon

A portion of tRNA molecule that is complementary to a codon on the mRNA. The anticodon enables the tRNA to recognize the codon through complementary base pairing.

__Amino acid __

A monomer of polypeptides. A protein molecule is made from a long chain of these amino acids.

t-RNA

The transfer RNA carries an amino acid to the ribosome, which is the site for protein synthesis.