Which of the following is NOT a macromolecule? (1 point) Carbohydrate Protein Lipid Sodium

Sodium is the odd one out here! While carbohydrates, proteins, and lipids are considered macromolecules due to their large size and complex structure, sodium is a simple element—a mineral that serves as an essential electrolyte in the body but doesn’t fit into the macromolecule category. Now, let's talk about the fascinating roles of macromolecules. For instance, proteins can act as enzymes, hormones, and structural components. Carbohydrates serve as energy sources and play vital roles in cell signaling. Lipids are crucial for forming cellular membranes and storing energy. Each type of macromolecule is key to our healthy functioning!