Made of C, H, O.
Provide instant energy.
Examples: glucose, fructose, sucrose, starch, cellulose.
Made of amino acids.
Help in body growth, repair, enzymes, hormones.
Examples: keratin, collagen, insulin, enzymes.
Fats and oils.
Store long-term energy and form cell membranes.
Examples: triglycerides, phospholipids, cholesterol.
DNA and RNA.
Carry genetic information and control protein synthesis.