The compound that contains nitrogen and is related to the list of substances you've provided (starch, glucose, water, and amino acid) is "amino acid." Amino acids are the building blocks of proteins and contain nitrogen atoms in their chemical structure. While the other substances you mentioned (starch, glucose, and water) do not contain nitrogen in their basic chemical makeup, amino acids are characterized by the presence of both carbon, hydrogen, oxygen, and nitrogen atoms. These elements combine in various ways to form the different amino acids essential for protein synthesis in living organisms.