in photosynthesis, the plants use the chloroplast in their leaves to collect sunlight to make the color green this is caused by chlorophyll they release oxygen for us to breathe.
cellular respiration is when cells convert glucose into energy and that's energy is called ATP. it begins in the cytoplasm. it occurs in three cycles: glycolysis, Krebs cycle, and electron transport.
photosynthesis converts a lot of carbon dioxide and water into oxygen for us to breathe while cellular respiration on the other hand converts oxygen and glucose into water and carbon dioxide. water and carbon dioxide are by-products and ATP is the energy produced