Archaea

Seite 1

Archaea

3 groups of Archaea:

1. Thermoacidophiles (acidothermophiles):

-anerobic

-can survive in high temperatures and high acid

2. Halophiles

-aerobic

-live in areas with high salt

3. Methanogens

-anerobic

-use carbon dioxide, hydrogen sulfide or nitrogen gas and methane gas is produced as a bi-product

Why were Archaea bacteria originally classified with bacteria?

-same shapes

-tiny (microscopic)

-reproduce similar to Bacteria

-"surface structure" is similar to bacteria ---> flagella, cell wall, no organelles

-prokaryotes

-manufacture energy in similar ways

Why were Archaea bacteria given their own Kingdom after?

-cell wall is chemically different (no peptidoglycon)

-phospholipid structure of cell wall is different

-DNA/RNA is chemically different from Bacteria