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.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

the answer is b. glad to .