Organelles are tiny structures found within cells that perform specific functions, much like organs in a body. Each organelle has a unique role, helping the cell to grow, produce energy, and carry out various tasks. For example, the mitochondria are known as the "powerhouses" of the cell because they generate energy, while the ribosomes are responsible for making proteins. These organelles work together to keep the cell healthy and functioning properly. Some organelles, like the nucleus, store genetic information, while others, like the endoplasmic reticulum, help in the production and transport of materials. Understanding organelles is essential for studying how living organisms operate.