AP BIOLOGY

Detailed explanation-1: -Macromolecules : Example Question #4 There are four classes of biological molecules: fats, carbohydrates, proteins, and nucleic acids. Of these, fats produce the most energy per gram at a whopping nine calories per gram.

Detailed explanation-2: -The organic molecules that store the most energy are called fats or triglycerides.

Detailed explanation-3: -The main biological functions of lipids include storing energy, as lipids may be broken down to yield large amounts of energy. Lipids also form the structural components of cell membranes, and form various messengers and signaling molecules within the body.

Detailed explanation-4: -The amount of energy stored as lipids is greater than the amount stored as glycogen since the human body cannot store as much glycogen as lipids can.