AP BIOLOGY

Detailed explanation-1: -Triglyceride is the most common lipid that is used for energy storage. Triglycerides are the main body fat constituents for vertebrates. They are tri-esters comprising a glycerol molecule that is bound to three fatty acid molecules.

Detailed explanation-2: -Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of lipids called fats. Lipids also provide insulation from the environment for plants and animals.

Detailed explanation-3: -Lipids provide long-term energy storage, form cell membranes (phospholipids). The provide insulation, and cushioning of internal organs, and partake in the messaging process in the body (hormones).

Detailed explanation-4: -Cell membranes are waterproof due to the lipid portion of the membrane bilayer. Cell membranes are made of a phospholipid bilayer which has proteins within it.