Cellular respiration is a process in which energy is generated by burning of glucose in presence of oxygen.
The energy generated during cellular respiration is used to carry of different cellular functions .
During this process along with energy, carbon dioxide (CO2) and water vapors are also generated,
The process can be represented as follows.
Glucose + Oxygen ------> Carbon dioxide + water + Energy
Therefore, Glucose ( C₆H₁₂O₆) is a reactant, along with oxygen, in cellular respiration