Carbon atoms can attach to each other and form straight or branched chains and ringed structures of organic compounds.

Today millions of different organic compounds are known.

Biological functions of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)

2 types of nucleic acids are the most important macromolecules for the continuity of life.


Proteins are an one of 4 major types of biological molecules and made up of amino acids.

An importance of proteins can be seen through the vast range of functions that they perform.

lipid bilayer

Lipids include a diverse group of water insoluble biomolecules that are mainly nonpolar in nature.

3 main types of lipids include:

  1. Triglycerides
  2. Phospholipids
  3. Steroids

glycogen structure

Functions of carbohydrates

Carbohydrates, along with lipids, proteins, and nucleic acids, belong to 4 major macromolecules of life.

The main role of carbohydrates is to provide energy.