What are four major macromolecules and what is their structure and function?

1 Answer
Jan 10, 2016

The four macromolecules are nucleic acids, carbohydrates, proteins, and lipids.


1. Nucleic acids: Contain N in rings, nucleotides made of sugar, phosphate and nitrogenous base

  1. Carbohydrates: Made of C,H, and O; –OH's on all carbons except one

  2. Lipid: Made of C,H, and O; lots of C-H bonds; may have some C=C bonds (unsaturated)

  3. Protein: Contain N, have N-C-C backbone


  1. Nucleic acids: Stores and transfers info
  2. Carbohydrates; Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall
  3. Lipid: Insulator and stores fat and energy
  4. Protein: Provide structural support,transport, enzymes, movement, defense.