The significance of studying cellular respiration in biology lies in understanding how organisms convert glucose into usable energy in the form of ATP. This process, which occurs in the mitochondria of cells, is essential for maintaining cellular functions and sustaining life. By learning about cellular respiration, scientists can gain insights into metabolic pathways, the effects of different environments on energy production, and how disruptions can lead to diseases. Moreover, it is foundational for understanding broader biological concepts like energy flow and ecosystem dynamics.