Final answer:
The thermal effect of food (TEF) accounts for about 10% of Total Energy Expenditure, which indicates most energy from food is transformed into thermal energy or stored as fat.
Step-by-step explanation:
The thermal effect of food (TEF) accounts for approximately 10% of Total Energy Expenditure. This means when we consume food, only a small fraction of the energy released is used for work, while the majority is converted into thermal energy or stored as chemical energy in fat. This is particularly relevant in discussions about dietary energy and the metabolism of different types of foods.