Overview of Cellular Respiration 1. Fill in the missing reactant and products of celular respiration: 2. In the equation above, which molecule is coidized (kses electrons)? What dises it become? 3. In the equation above, which molecule is reduced (gans electons)? What does it tecame? 4. Label the stages, inputs and oulputs of celular respiration in the figre beiow..