14 Questions
What is the shape of Archaea cells?
Various shapes, including spherical, rod, spiral, and others
What is the primary source of energy for organotrophs, including humans?
Organic compounds
What is unique about the cell wall of Archaea?
It has a complex polysaccharide structure and lacks peptidoglycan
Where are Archaea typically found?
Only in extreme environments
What is the role of Archaeoglobus fulgidus?
Souring oil wells
What is the characteristic of Pyrolobus fumarii?
It can survive in extreme hot environments
What is the characteristic of Pyrococcus furiosis?
It is the source of an extra-stable enzyme for PCR
What is the primary metabolism of methanogens?
CO2 + 4 H2 → CH4 + 2 H2O
What temperature range do hyperthermophilic Methanopyrus prefer?
84°C - 110°C
Where can Sulphate Reducers typically be found?
Marine sediments
What gas is produced during the metabolism of methanogens that can be used as fuel?
Methane (CH4)
What characteristic do extreme halophiles require to grow?
High salt concentrations
What is a key metabolic end product of extreme thermophiles?
Sulfuric acid (H2SO4)
What do methanogens provide in addition to fuel?
Energy for warming houses and stoves
Explore the unique features of Archaea, including their shape, metabolism, ecology, taxonomy, and differences from Bacteria. Learn about their extreme environments and important examples.
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