5 The law of conservation of energy states that energy cannot be destroyed or created. It can only change in form and move from place to place. An ATP molecule in an animal
cell is used for energy.
A Explain how the energy reached the ATP molecule from its original source.

the energy in the ATP molecule comes from energy that is released by catabolic reactions like cellular respiration which occurs in the mitochondria. The energy was originally in the glucose molecule. This energy can be used to join ADP plus inorganic phosphate to form the high energy ATP molecule

Explanation:

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