LIFE SCIENCE

Detailed explanation-1: -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-2: -Proteins, lipids, carbohydrates, and nucleic acids are the most common long-term energy storage molecules in cells. All four are organic compounds and are much larger in size than ATP molecules.

Detailed explanation-3: -Lipid droplets (LDs) are intracellular organelles specialized for the storage of energy in the form of neutral lipids such as triglycerides and sterol esters.

Detailed explanation-4: -Energy Storage While glycogen provides a ready source of energy, lipids primarily function as an energy reserve. Glycogen is quite bulky with heavy water content, thus the body cannot store too much for long. Fat is used for energy during exercise, especially after glycogen is depleted.