NEET BIOLOGY

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: -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: -Because of these differences, lipids are used in long-term energy storage (adipose, or fat, tissue), and carbohydrates are used in short-term energy storage (glycogen).

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

Detailed explanation-5: -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.