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Cells take in small, energy-rich molecules from food. These molecules include sugar molecules. Cells use the molecules in a long series of chemical reactions. These reactions are known together as cellular respiration. Cellular respiration breaks down energy-rich molecules to form different molecules. This process also releases energy. Which of the following statements are true about cellular respiration? Select all that apply.
Cellular respiration involves many chemical reactions. When a chemical process involves a series of reactions, scientists may summarize the process with a single chemical equation. This equation shows only the key reactants and products. For example, cellular respiration often uses a sugar called glucose and oxygen gas as key reactants. This process can be summarized by the following chemical equation: glucose + oxygen ? carbon dioxide + water Glucose, like other sugar molecules, often serves as an energy source for cells. Cells release energy by breaking down glucose through chemical reactions with oxygen gas. This process produces carbon dioxide gas and water. Which of the following substances are key reactants of this process? Select two.
Consider the same cellular respiration process, which is summarized by this chemical equation:
glucose + oxygen --> carbon dioxide + water
Use the tiles to complete the sentence. The key products of this process are and ?