Final answer:
Carbohydrates, like glucose, are crucial energy sources for cells, playing a key role in cellular respiration and ATP production.
Explanation:
Carbohydrates are essential macronutrients that serve as a vital energy source for cells. Glucose, a simple sugar derived from carbohydrates, is a primary fuel for cellular respiration and ATP production. Excess glucose can be stored as glycogen or converted into fat for energy reserves.
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