microbiology lecture four

what do most archaea inhabit

the ocean

what is archaea temperature range

2-121 C

what produces methane

archaea

biochemically what is the most diverse

archaea

what is the chemical make up of archaea

L-glycerol, ether links, and branched chains of lipids

what does archaea have that is similar to bacteria

circular genome, and has operons

what does archaea have that is similar to eukaryotes

has introns, and has proteins similar to histones

what is the archaea cell wall

pseudopeptidoglycan

what does archaea have that other ones dont have in the cell wall

NAT

what is archaea resistant to

lysozyme

what is the first discovered archaea

crenarchaeota

what limits microbial life

upper temperature

what is the only form of bacteria that can sustain high temperatures

archaea

what are structural features that improve thermostability

highly hydrophobic cores, increased ionic interactions

what happens to DNA at high temperatures

positive supercoils

what do desulfurococcales not have

a cell wall

what do nitrosopumilales do

oxidize ammonia, fix CO2

where is crenarchaeota found

in ice and seawater in Antarctica

how many major orders are there of euryarchaeota

five

how much more potent is methane than o2

20x

what M do halophiles grow best at

4.3

what does bacteriorhodopsin do

pumps out H+

what does halorhodopsin do

pumps in Cl-

what do archaeoglobales do

oxidize acetate to CO2

what is the emerging euryarchaeota

korarchaeota, thaumarchaeota, nanoarchaeota