In biology, the relationship between structure and function is fundamental. The structure of biological entities, such as cells, tissues, or organs, directly impacts their function. For instance, the specific arrangement of neurons allows them to efficiently transmit signals, while the structure of the alveoli in lungs facilitates gas exchange due to their large surface area. This principle underscores the adaptability of living organisms, as variations in structure can lead to different functions, influencing evolutionary processes and ecological interactions.