a�Mitochondria, Ribosomes, Synapses, Microtubules, Vacuoles, Endoplasmic Reticulum, Nucleus, Cytoplasm, Axons, Dendrites, Capacitors, Diodes, Integrated Circuits, Pistons, Cylinders, Gears, Bolts, Screws, Bearings, Wires, Transistors, Resistors, Microchips, Fibers, Capillary tubes, Pumps, Tubules, Nerve terminals