👉 The term "organ" in biology refers to a living cell or tissue that is composed of cells and provides structural support and function. Organisms are typically found within the body of an organism, such as plants, animals, fungi, and bacteria. The term "organelle" is used to describe the small structures (often called organelles) that make up the inner workings of a cell, including the nucleus, mitochondria, chloroplasts, and lysosomes. In more advanced biology