An organelle is to a cell what an organ is to a human body. The term "organelle" is basically the same as to say "little organ". This is interesting because, inside of the cell, the organelle operates on its own, using its own protective layer, and allowing the cell to perform specific functions. Similarly in our human body, our organs work in an interdependent way, and on their own, using each their own protective mechanisms and making sure that our bodies are performing to their most optimal condition.