Amino acids are the building blocks of proteins. which of these best describes an amino acid?
a) inorganic
b) ionic
c) organic
d) radioactive

The answer is C. Organic. Amino acids are organic compounds that contain amine and carboxyl functional groups along with a side chain ( the R group) which is specific to each amino acids. They are the building blocks of proteins; many amino acid molecules are joined by peptide bonds to form proteins,The proteins play a crucial role in almost all biological processes, a large proportion of our cells, muscles and tissues are made up of amino acids. 

Is their a picture that goes along with it? ?