Archaea

?
When were they discovered?
41 years ago
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What was used as a molecular chronometer?
rRNA small subunit
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What makes a good chronometer?
Universal, Conserved, Abundant
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What are the 4 catagories of Archaea?
Korarchaeota, Nanoarchaeota, Crenarchaea, Euryarchaeota
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Korarchaeota facts?
little known, key to life billions of years ago, 85degrees, yellowstone
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Nanoarchaeota contains a single organism, what is it?
Ignicoccus
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What is Ignicoccus?
The only Nanoarchaeota
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What is a psychrophile?
A microorganism capable of growing in low temperatures
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What are Crenarchaea?
Thermophiles, Psycrophiles
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What are Euyarchaeota?
Halophiles, Methanogens, Thermophiles
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What is a halophile?
A microorganism capable of growing in high salt concentrations, adjust water balance by pumping K+ into cell so water flows in, acidic, few hydrophobic proteins
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What is a mathanogen?
microorganisms that produce methane, live in oxygen free regions, in digestive tracts
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Features of Thermophilic cells?
Phospolipid monolayer resistant to pull apart, proteins contain hydrophobic cores and more salt bridges, chaperonins
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What are chaperonins?
Proteins that refold partially denatured proteins, reverse DNA gyrase
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What is Lokiarchaeon?
closest relative to eukaryotes, eukaryotes could have evolved from it
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Differences between Archaea and Bacteria?
Multiple origins of DNA replication, more complex DNA replication and transcription machine
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Differences between Archaea and Eukarya?
unicellular only
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Uses in biotechnology?
thermostable enzymes, biomining, biodegredation of toxic materials
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Card 2

Front

What was used as a molecular chronometer?

Back

rRNA small subunit

Card 3

Front

What makes a good chronometer?

Back

Preview of the front of card 3

Card 4

Front

What are the 4 catagories of Archaea?

Back

Preview of the front of card 4

Card 5

Front

Korarchaeota facts?

Back

Preview of the front of card 5
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