Exam 17: Diversity of Archaea

Hyperthermophilic Archaea have been found to contain biphytanyl tetraether lipids. Why are these lipids different from lipids present in non-hyperthermophiles? What special properties and structures do they confer?

Thermoplasma metabolizes organic compounds leached from hot coal refuse.

The bioenergetics of anaerobic respiring Archaea such as those of the Crenarchaeota involve ________ from which ________ is synthesized.

Which statement is TRUE of methanogenic and extremely halophilic Archaea?

Laboratory isolation of Nanoarchaeum equitans requires the presence of

Pseudomurein (pseudopeptidoglycan) is part of the cell wall of some methanogens.

The domain Archaea is divided into three phyla.

Which archaeal phylum contains many extreme halophiles, methanogens, some marine hyperthermophiles, and Thermoplasma?

Some of the largest naturally occurring plasmids occur in the

Halobacterium salinarum and certain other extreme halophiles carry out light-driven synthesis of ATP under what condition?