Photosynthesis: Photosynthesis is. it differs in the photosynthetic bacteria in that compounds other than water serve as a reactant and oxygen is not produced. What Are the Reactants of Photosynthesis?. The products of photosynthesis, oxygen and glucose, are the reactants of the cellular respiration reaction. In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded in cell membranes. In its simplest form, this involves the membrane. Plants use carbon dioxide in photosynthesis, which produces oxygen through chemical reactions. What are the Reactant and Products of photosynthesis? The reactants in photosynthesis are carbon dioxide and water. The overall reaction of photosynthesis is: carbon dioxide + water -- glucose + oxygen gas + water The overall reactants of photosynthesis are carbon dioxide and water, and the overall products of photosynthesis are glucose and oxygen. The overall reactants of. Photosynthesis & Cellular Respiration. Products (outputs) of Photosynthesis. Oxygen and Glucose. (with oxygen present) oxygen released by plants comes from what reactant in photosynthesis?. to make food through the process of photosynthesis. The stomata allows oxygen to. Products are ATP, NADPH, and oxygen; and the reactant is water. 2. The products is glucose. Is photosynthesis endergonic/exergonic, anabolic and/or catobolic? What are the correct reactants and products of photosynthesis. What are the correct reactants and products of photosynthesis and. Sugar ) + 6O2 ( Oxygen ).