- Carbohydrates contain carbon, hydrogen and oxygen.
- Their structure involves monosaccharides such as glucose and fructose which can form long chain polysaccharides such as starch or cellulose in condensation reactions (removal of water in reaction).
- Proteins contain carbon, hydrogen, oxygen and nitrogen.
- They are made up of long chains of amino acids, which join together in a variety of orders.
- Lipids contain carbon, hydrogen and oxygen.
- They are composed of monomers of lipids, which contain fatty acids and glycerol.
- They form in condensation reactions, and can be broken down into their subunits in hydrolysis reactions.