Answer: the nucleus
Because it contains protons and neutrons whose mass is too much when compared to electrons.
Hope this helps ʕ•ᴥ•ʔ
The right answer is more Chemical bonds.
Lipids are the most energetic macronutrients (as a reminder: 1 g of lipids represents 9 kcal, against 4 kcal for 1 g of carbohydrates or 1 g of proteins). Lipids are the molecules present in the fat of foods. They divide into saturated fatty acids and unsaturated fatty acids. These fatty acids can contain between 4 and 20 carbon molecules while carbohydrates contain between 3 and 6 carbon molecules.
