Archaea Flashcards
What features do archaea lack?
Nucleus and membrane bound organelles.
What is the cell wall made of?
Psuedopeptidoglycan
What features does the cell wall have?
It can form membrane mono layers
What are the benefits of forming membrane mono layers
Less susceptible to high temp
Psychrophile
Survives at low temps
Thermophile
survives at high temps
Barophile
High hydrostatic pressure
Halophile
High salt concentration
How do archaea reproduce?
Asexually via binary fission, fragmentation, or budding
Halobacterium
Aerobic, high salt conc.
What do halophiles use as a proton pump?
Bacteriohodpsin
What is bacteriohodpsin
protein carrying protons across membrane
Methanobacterium
Anaerobic, nonmotile, rod shaped
Where is mathanobacterium found
GI tract of animals
What does methanobacteria use to oxidize hydrogen
CO2
What are methanogens used in
biogas production and sewage treatment
The oxidation of hydrogen by methanobacteria is used to make what
Methane
Thermoplasma
Facultative anaerobe, lacks cell wall, flaggelated, lives at high temp and acidity
Thermoplasma respires using what
Sulfur and organic carbon
What is a facultative anaerobe
Respires using anaerobic and aerobic respiration
Sulfolobus
High temp and acidity, thrives in volcanic springs
What is sulfolobus’s final e- acceptor
Sulfur
