Amino Acids have a basic structure of three components, an amino group made of âH2N, a carboxyl group âCOOH and the last group is called the R-group or variable group which is composed of Carbon, Hydrogen and Oxygen. The arrangement of the C,H and O in this group determines the name of the amino acid.
: a person born, raised, or living in Puerto Rico. : a person whose family is descended from the island of Puerto Rico. : any item deriving it's origin from the island of Puerto Rico. : any item relating to the people of Puerto Rico/Puerto Ricans.
1873 (n.), 1874 (adj.), from Puerto Rico + -an. Earlier was Porto Rican (1842). Spanish, literally rich harbor; Caribbean island, name given in 1493 by Christopher Columbus to the large bay on the north side of the island; he called the island itself San Juan.