Lipids serve several functions in the body, including energy storage, insulation, structural components of cell membranes, and signaling. They are also involved in the absorption and transport of fat-soluble vitamins (A, D, E, and K) and play a role in hormone synthesis. Key points about lipids:Energy storage:Triglycerides are the primary form of stored energy in the body. They are broken down into fatty acids for energy when needed. Insulation:Lipids, particularly adipose tissue, help insulate the body and maintain core temperature. Cell membrane structure:Phospholipids are the main components of cell membranes, forming a barrier that separates the cell from its surroundings. Hormone signaling:Steroid hormones are lipids that act as messengers, regulating various physiological processes. Fat-soluble vitamin absorption:Lipids are essential for the absorption and transport of fat-soluble vitamins. For a more helpful explanation to multiple choice questions, try including the answer options in your search.