Answer:
In photosynthesis, reactants such as carbon dioxide and water are used to create products such as glucose and oxygen. In cellular respiration, glucose and oxygen are used as reactants to create products such as carbon dioxide and water. The organelle involved in photosynthesis is the chloroplast, which contains chlorophyll and other pigments that absorb sunlight to convert it into chemical energy. The organelle involved in cellular respiration is the mitochondria, which converts the chemical energy in glucose and oxygen into a form that cells can use. Photosynthesis and respiration are a cycle because they are interconnected and dependent on each other. The glucose produced during photosynthesis is used as a reactant in cellular respiration, while the oxygen produced during photosynthesis is used as a reactant in cellular respiration. The carbon dioxide and water produced during respiration are used as reactants in photosynthesis.