Bio-matter resequencer
A bio-matter resequencer was a device which recycled waste aboard 22nd century starships such as . In this process, waste matter was sterilized and broken down for reuse in manufacturing boots, cargo containers, insulation, and other necessities. ()

In 2151, Enterprise NX-01 Captain Jonathan Archer delegated Molly McCook's question, "When you flush the toilet, where does it go?" to chief engineer . Displeased, Tucker protested having to answer the "poop question," but ultimately relented and explained the ship's processes of recycling and bio-matter resequencing. ()

After four Ferengi – Ulis, Krem, Muk, and Grish – took over control of Enterprise and rendered the vessel's crew unconscious, they tried to find the ship's vault. Commander Tucker, who remained conscious, placed a security lock at the the entrance to the bio-matter resequencer room and presented this room as the vault. The Ferengi ran into a trap and were shot by T'Pol, who had been waiting behind the door. ()

See also 
 Protein resequencer
 Replicator
Spacecraft components