BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Fats are incredibly important for energy storage: 1g of lipid will release nine calories when burned, while in comparison 1g of carbohydrates only releases four calories.

Detailed explanation-2: -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.

Detailed explanation-3: -Fats are the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates.

Detailed explanation-4: -One of the reasons low-fat diets are recommended for weight loss is because fats, also called lipids, contain more calories per gram, and thus more energy, than carbohydrates or proteins.

Detailed explanation-5: -Lipids have a higher caloric value per gram than carbohydrates or proteins because their molecules have more hydrogen atoms to remove. More hydrogen atoms equal more energy.