1) in a model summarizing cellular respiration wich of the following must be represented as raw materials or the reactants of the process? a. glucose and carbon dioxide b. glucose and oxygen c. carbon dioxide and oxygen d. oxygen and lactic acid 2. which statement best describes an event represented in the model that contributes to the production of atp? a. pyruvic acid is broken down to form carbon dioxide b. oxygen molecules are broken down and converted into pyruvic acid c. high energy electrons are passed to nad^+ forming nadh. d. carbon atoms in glucose are transformed into energy in the form of atp