What is the role macromolecules play in relation to life on earth

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.