Fats: These are a type of fat that stores energy for the long term, keeps the body warm, and protects organs.
Phospholipids: These help make up cell membranes, which control what goes in and out of cells.
Waxes: These are water-repellent substances that cover plant leaves and animal fur to prevent water loss and provide protection.
Steroids: These have a specific four-ring structure and act as hormones. They help regulate things like metabolism, immune responses, and reproduction.