changing of stored chemical energy in food molecules to a form usable by organisms.
Explanation:
Cellular respiration involves the changing of chemical energy in food molecules to a form usable by organisms.
During the process of cellular respiration, oxygen combines with food materials in form of glucose to release useful energy needed for life to function.
Respiration can be pictured as the reverse process of photosynthesis in which chemical energy is produced.
In respiration, energy is released from the food materials.
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Cellular respiration brainly.com/question/344105
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