ARCHAEOBACTERIA

Methanogens

Obtain energy for growth via the formation of methane

Sulfate- reducing bacteria

Obtain energy for growth using inorganic sulfur compounds

Extremely halophilic aerobic bacteria

Capable of growth only in the presence of oxygen: require high levels of sodium for growth

Cell- wall- less bacteria

Acidophilic,aerobic, thermophilic

Extremely thermophilic and hyper thermophilic sulfur metabolizers

Growth with optimum temperatures above 100 degree Celsius; obtain energy from sulfur- containing compounds

Sulfolobus

Residents of volcanic habitats

Pyrodicitum

Has highest temperature optimum known

Thermoplastic

Contains a very small genome for a prokaryote

Natronobacterium

Grow in saline soda lakes

Halobscteeium

Grow in hyper saline natural and artificial environments

archaeglobus

Sulfur cycle

Methanococcus

Methaobacterium

Sewage treatment