The term 'PARAMECIUM PROPELLERS' refers to the CILIA of a paramecium, which are small, hair-like structures that protrude from the surface of the organism. CILIA are used by paramecia to move through their environment and to capture food particles. They are also used for sensory purposes, such as detecting changes in light or temperature. CILIA are composed of microtubules and are powered by ATP molecules, allowing them to beat in a rhythmic fashion. This rhythmic beating creates a current that propels the paramecium through its environment.