Eugene is running and needs more energy. He drinks a sports drink with sugar, but that sugar needs to be converted to another substance containing chemical energy for his leg muscles to be able to use it. Which process will convert the sugar to energy that his cells can use?

Cellular respiration breaks down sugar and transfers its chemical energy into ATP, a form of energy that muscle cells can use. Photosynthesis makes sugars using light energy, breathing moves air in and out of the lungs, and energy storage does not convert sugar into usable cellular energy.

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