| Cross Index | Archaea |
| SuperSet | Prokaryote |
| Compare | |
| Contrast | Eubacteria |
| Subset | Methanogens
Cell Wall-Less Archaeobacteria Sulfate Reducing Archaeobacteria Halophilic Archaeobacteria Extremely Thermophilic Archaeobacteria |
| Morphology | Archaea |
| CELLULAR |
| Staining | |
| Morphology | |
| Motility | Some archeobacteria are motile while others are non motile |
| Specialized structures | The lack of murein cell walls makes archaeobacteia insensitive to Beta lactam antibiotics. |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Archaea |
| PHYSIOLOGICAL |
| Tropism | chemolithoautotrophically organotrophically or facultatively organotrophically |
| Oxygen | They consist of aerobes, anaerobes and facultative anaerobes |
| pH | |
| Temperature | mesophiles or thermophiles, with some species growing even above 100 c. |
| Requires | |
| Products | |
| Enzymes | |
| Unique features | The archaebacteria do not
have peptidoglycan in the cell wall and thus are
resistent to Beta lactam antibiotics such as penicillin.
unique biochemical feature of archaeobacteria is the presence of glycerol isopranyl ether lipids. The "common arm" of the tRNAs contain pseudouridine or 1-methylpseudouridine instead of ribothymidine. The sequences of 5S, 16S and 23S rRNAs are very different from the corresponding one in eubacteria and eucaryotae. |
| ENVIRONMENTAL |
| Habitat | predominatly terrestrial and aquatic microbes occurring in anaerobic or hypersaline or hydrothermally and geothermally heated envirnments. |
| Lifestyle | Some are symbionts in animal digestive tracts |
| Pathogenicity |
| Distribution |
| Genome | Archaea |
| G+C Mol % |
| Reference | Archaea |
| First citation | |
| The Prokaryotes | p |
| Bergey's Systematatic | p 2171-2253 H. Konig and K.O. Stetter |
| Bergey's Determinative | p 12-14 |
| References |