Which of the following is a reactant during cellular respiration? (3 points) Carbon dioxide Glucose Energy Water

## Step 1<br />Cellular respiration is a process that cells use to produce energy from glucose and other organic molecules. This process involves three main stages: glycolysis, the Krebs cycle, and the electron transport chain.<br /><br />## Step 2<br />The reactants of cellular respiration are the substances that are used up in the process to produce energy. In the case of cellular respiration, the reactants are glucose and oxygen.<br /><br />## Step 3<br />Glucose is a type of sugar that is used by cells as a source of energy. Oxygen is required for the process of cellular respiration to occur.<br /><br />## Step 4<br />The other options, carbon dioxide, energy, and water, are not reactants but are products of cellular respiration. Carbon dioxide is produced as a waste product, while water is produced when oxygen combines with hydrogen.