One of the Building Blocks of Protein
This page is the CodyCross answer for the clue below from Rainforest, Group 1204, Puzzle 3 (Biodiversity).
Question is: One of the Building Blocks of Protein
and the answer is: AMINOACID
Word Meaning:
AMINO ACID — (biochemistry) Any organic compound containing both an amino and a carboxylic acid functional group.
Definitions from Wiktionary.