Cellular respiration is a process that occurs in both eukaryotic and prokaryotic cells. The process of cellular respiration produces ATP, which provides energy to the organism. Plants, humans, and all organisms go through this process. The three stages of it are glycolysis, citric acid cycle, and the electron transport chain. Glucose is needed in the process of cellular respiration, which is an advantage to plants because they produce it in photosynthesis. Even the plants in the photo participate in cellular respiration and is why they are still alive.