Lipids store double amount of energy as compared to carbohydrates because of:

Explanation

Option D is correct. Yes, that is correct. Lipids contain more energy than carbohydrates because they have a higher proportion of carbon-hydrogen bonds and lower proportion of oxygen. Carbon-hydrogen bonds are very strong and require a lot of energy to break. When lipids are broken down, the energy from these bonds is released. Carbohydrates, on the other hand, have a higher proportion of oxygen-hydrogen bonds. Oxygen-hydrogen bonds are not as strong as carbon-hydrogen bonds, so they release less energy when they are broken down. This is why lipids are considered to be a more concentrated source of energy than carbohydrates. A gram of fat contains about 9 calories, while a gram of carbohydrate contains about 4 calories.