What you’ll learn to do: Discuss macromolecules and the differences between the four classes

As we’ve learned, there are four major classes of biological macromolecules:

• Proteins (polymers of amino acids)
• Carbohydrates (polymers of sugars)
• Lipids (polymers of lipid monomers)
• Nucleic acids (DNA and RNA; polymers of nucleotides)

Let’s take a closer look at the differences between the difference classes.