Where does the energy come from that your body uses to keep you alive?
A)It comes from the water you drink.
B)It comes from the foods you eat.
C)It is in the air that you breathe.
D)It is created during the time that you rest or sleep.
E)It is produced from the radiative energy of the Sun on your skin.

Question

Quizplus · Accepted Answer

The energy that your body uses to keep you alive comes from the foods you eat. The process of breaking down the complex molecules in food, such as carbohydrates, proteins, and fats, releases energy that is used by your body's cells. This process is called cellular respiration. Water is important for many functions in the body, but it does not provide the energy needed to keep you alive. The air you breathe contains oxygen, which is necessary for cellular respiration, but it does not provide the energy itself. Resting and sleeping are important for allowing your body to repair and regenerate, but they do not produce energy. Radiative energy from the sun can be converted to vitamin D in your skin, but it is not a significant source of energy for your body.

Where Does the Energy Come from That Your Body Uses