<em>That chemical energy which is not used for cellular work is used to contribute to the entropy of the system. </em>
<u>Explanation:</u>
The <em>chemical energy is stored in the form of sugar in plants and as fats or lipids</em> is used to store energy in animals. The entropy of the system in plant cell is used to produce carbohydrates by <em>combining the water and carbon dioxide. </em>
<em>Humans and animals convert energy obtained from food as fat for the long-term storage of the energy.</em>
