Which statement best summarizes cellular respiration?

a. The chemical potential energy stored in organic molecules is converted to chemical energy that can be used to do the work of the cell.

b. Organic molecules, such as carbohydrates, are converted to chemical energy that can be used to do the work of the cell.

c. Chemical potential energy in the bonds of ADP is transferred to the chemical potential energy in the bonds of ATP.

The answer is (a). The chemical potential energy stored in organic molecules is converted to chemical energy that can be used to do the work of the cell.

Explanation:

Cellular respiration is the process by which organisms combine oxygen with foodstuff molecules while diverting the chemical energy in these substances into life-sustaining activities and removing carbon dioxide and water as waste products. Organisms that do not depend on oxygen degrade foodstuffs in a process called fermentation. The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy because weak high-energy bond, especially in molecular oxygen,  are replaced by stronger bonds in the products.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.