AP BIOLOGY

Detailed explanation-1: -The organic molecules that store the most energy are called fats or triglycerides. The animal body uses carbohydrates (glycogen) for medium-term energy storage and fats or triglycerides (lipids) for long-term energy storage.

Detailed explanation-2: -Fats (lipids) Fats are the primary long-term energy storage molecules of the body. Fats are very compact and light weight, so they are an efficient way to store excess energy. A fat is made up of a glycerol, which is attached to 1 to 3 fatty acid chains.

Detailed explanation-3: -A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.

Detailed explanation-4: -So, the correct answer is ‘Fat’

Detailed explanation-5: -Answer and Explanation: ATP is an organic compound that is the main source of energy for all living systems. Certain researchers prefer to call glucose the main source of energy, but glucose is catabolized into energy. Basically, there are four sources of energy: carbohydrates, lipids, proteins and nucleic acids.