LIFE SCIENCE

Detailed explanation-1: -As discussed previously, glucose is stored in the body as glycogen. 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.

Detailed explanation-2: -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-3: -The purpose of carbohydrates and some lipids (fats) is to provide short-term and long-term energy to the body.

Detailed explanation-4: -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. The unused calories of our body are stored in the form of triglycerides.

Detailed explanation-5: -They are a concentrated energy source, providing more energy per gram than the carbohydrates. Unlike the carbohydrates, the body is able to store lipids in the body, and they are therefore an important long term source of energy.