1. Carbohydrates: These are organic compounds made up of carbon, hydrogen, and oxygen. They are important for energy storage, structural support, and cell signaling. Examples include sugars, starches, and cellulose.

2. Proteins: These are large, complex molecules made up of amino acids. They play crucial roles in a wide variety of biological processes, including:

* Enzymes: Catalyze (speed up) chemical reactions.

* Structural components: Provide support and shape to cells and tissues.

* Hormones: Act as chemical messengers.

* Antibodies: Help the immune system fight off infection.

* Transport proteins: Move molecules across cell membranes.

Let me know if you'd like to know more about these or other macromolecules!