Cellular respiration (specifically, aerobic cellular respiration) is the process by which cells convert glucose, a form of sugar, into usable energy in the form of adenosine triphosphate (ATP) using oxygen as the final electron acceptor. The overall chemical reaction for aerobic cellular respiration is:
$$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + energy (as ATP)$$
The reactants in cellular respiration are glucose ($$C_6H_{12}O_6$$) and oxygen ($$O_2$$). The products of cellular respiration are carbon dioxide ($$CO_2$$), water ($$H_2O$$), and energy in the form of ATP.