represents amine functional group and 
represents carboxylic acid functional group. When these both functional groups are substituted onto a single carbon atom, then amino acid is formed.
The organic compound consists of functional group and functional group with a side chain is said to be an amino acid.
A: amine group is .
C: carboxylic acid group is
B: amino acid represents functional group and functional group which are substituted onto a single carbon atom.
D: carbohydrate: the general formula of carbohydrate is 
.
Hence, amino acid is the correct answer.
The answer would be c. Have you ever seen gravy? It always separates and leaves different layers.
I think the "consent bonds" in your question is means covalent bond. It is false. Covalent bond share the electrons between atoms while ionic bond give up or accept electrons.
Yea! what the person underneath me said
