Both amino acids and fatty acids are organic acids. What property must they have in common with inorganic acids such as sulfuric acid? How do they differ? Consider such aspects as structure of molecules, size, bonding, and pH.

What makes any molecule an acid? Consider the difference between vinegar and HCl. Can you diagram an inorganic acid molecule such as HCl? Can you diagram an organic acid such as vinegar? What kinds of bonds hold their components together? Do you recall what is meant by pH?