The 4 main biological macromolecules are carbohydrates , lipids , proteins , and nucleic acids.

Quick Scoop

  • Carbohydrates
    • Built from monosaccharides (simple sugars) that can link to form polysaccharides.
* Main roles: quick energy source and structural support in things like plant cell walls.
  • Lipids
    • Include fats, oils, and phospholipids; not true polymers but large hydrophobic molecules.
* Main roles: long-term energy storage, insulation, and forming cell membranes.
  • Proteins
    • Made of amino acid chains that fold into complex shapes.
* Main roles: enzymes, structural support, transport, signaling—essentially the cell’s workhorse.
  • Nucleic acids
    • Built from nucleotide monomers (sugar + phosphate + nitrogenous base).
* Main roles: store and transmit genetic information as DNA and RNA.

Information gathered from public forums or data available on the internet and portrayed here.