Chemolithoautotrophic organism makes its own food using chemical processes and locally available minerals.

Microaerophile is a microorganism that requires oxygen to survive, but requires environments containing lower levels of oxygen than are present in the atmosphere (~20% concentration).

Filamentous clumps are insoluble fibrous protein aggregates sharing specific structural trait

Homologous - corresponding to a similar structure in another life form with a common evolutionary origin.