The molecules in the food we eat contain chemical energy stored in chemical bonds. Which statement BEST explains how this energy is released?
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A Cells burn food molecules, releasing energy as heat that powers movement while keeping the body at the correct temperature,
B. Chemical energy is released as eaten food is digested, giving off heat as a by-product.
C. Cells extract and capture the energy in food molecules all at once, then store it for later use.
D. Chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP.

The statement 'chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP' BEST explains how energy is released from foods (Option D).

Cellular respiration can be defined as a group of metabolic reactions by which aerobic cells produce energy in the form of ATP by using the energy stored in the chemical bonds of foods.

Cellular respiration consists of a series of catabolic reactions by which chemical bonds of large food molecules are broken down, thereby energy is released.

During these reactions, an important amount of energy released is lost as heat.

Cellular respiration has three main stages: glycolysis, the citric acid cycle (i.e., the Krebs cycle), and oxidative phosphorylation.

In conclusion, the statement 'chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP' BEST explains how energy is released from foods (Option D).

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