Tag: Energy transformation

The human body is only about 25% efficient at converting the chemical energy from food into useful work, with the rest being lost as heat. This transformation is a complex biological process that fundamentally changes food energy when it is used to do work, involving several stages of conversion from large molecules into the cellular fuel known as ATP.

Food contains concentrated energy, with fats providing over twice the energy density of carbohydrates or protein per gram. This stored energy is harnessed by the body through digestion, making digesting food an example of chemical energy release and transformation for biological use.