Final answer:
Triglycerides have a unique structure with glycerol and three fatty acids, while proteins consist of amino acids that form the backbone of the molecule.
Step-by-step explanation:
Triglycerides have a unique chemical structure consisting of glycerol attached to three fatty acids via dehydration synthesis. The glycerol backbone contains three carbon atoms, and the fatty acids are long chains of hydrocarbons with a carboxyl group and a methyl group at opposite ends. Proteins, on the other hand, are composed of amino acids that join together to form the backbone of the protein molecule. Proteins have a more complex structure than triglycerides and are made up of hydrogen, carbon, oxygen, and nitrogen.