Answer:
Amino acids contain nitrogen
Step-by-step explanation:
Monosaccharides and polysaccharides are carbohydrates that are composed of carbon (C), hydrogen (H) and oxygen (O)
Fatty acids are carboxylic acids with a long hydrocarbon chain terminating in a carboxylic acid group. These are again composed of C, H and O
Amino Acids are organic compounds containing both carboxylic acid (COOH) and amino group (NH2). Thus amino acids contain C,H, O and N