3. How is energy obtained by the cells of our body?
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As we have just seen, cells require a constant supply of energy to generate and maintain the biological order that keeps them alive. This energy is derived from the chemical bond energy in food molecules, which thereby serve as fuel for cells.
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Cells in your body get energy from the foods that are eaten, such as glucose (a sugar). This food is ingested via consumption and digested via the digestive system. ... Cellular respiration converts glucose and oxygen into water, carbon dioxide and usable form of energy called ATP (this stands for adenosine triphosphate).
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