Which of the following chemicals is a reactant in cellular respiration?

• A. Water (\(H_2O\))
• B. Oxygen (\(O_2\))
• C. Carbon dioxide (\(CO_2\))
• D. Glucose (\(C_6H_{12}O_6\))

Answer: (D)

Verified step by step guidance

1. Step 1: Begin by understanding the process of cellular respiration. Cellular respiration is a metabolic pathway that converts glucose (\(C_6H_{12}O_6\)) and oxygen (\(O_2\)) into energy in the form of ATP, with carbon dioxide (\(CO_2\)) and water (\(H_2O\)) as byproducts.
2. Step 2: Identify the reactants and products in the chemical equation for cellular respiration. The general equation is: $C_6{H}_{12}{O}_6+6O_2\to 6{\mathrm{CO}}_2+6H_{2}O+\mathrm{ATP}$
3. Step 3: Analyze the equation to determine which chemicals are reactants. Reactants are the substances that are consumed during the reaction. In this case, glucose (\(C_6H_{12}O_6\)) and oxygen (\(O_2\)) are the reactants.
4. Step 4: Compare the given options to the reactants identified in the equation. Water (\(H_2O\)) and carbon dioxide (\(CO_2\)) are products, not reactants. Glucose (\(C_6H_{12}O_6\)) and oxygen (\(O_2\)) are the correct reactants.
5. Step 5: Conclude that the correct answers to the question are oxygen (\(O_2\)) and glucose (\(C_6H_{12}O_6\)), as they are the chemicals consumed during cellular respiration.