Take the chloroplast, which is the part of a plant cell that harnesses energy for the plant and stores it as sugar. In a way it's a factory, except it doesn't have metal or pistons or wheels. Instead it has membranes and chemicals. The chloroplast contains structures that work on a
nano-scale - but we wouldn't call it nanotechnology. It's nature.
|Chloroplasts in leaf cells are mini factories but with membranes and chemicals.|