There are four types of macromolecule :
1)Carbohydrate
2) Protein
3) Lipids
4) Nucleic acids
Carbohydrate: They store energy, provide fuel and they are main buliding structurein body, main source of energy ,Structure of plant cell wall.
Nucleic Acids: DNA and RNA are nucleic acid , they store and transfer information .
Lipids: They store fats and energy . They are insulator.
Protein: They generally provide structural support , transport, enzymes , movements and defense.
So, these are the macromolecule which play important role in our life.