Microbiology

thought to represent the deepest branch of bacteria

optimum of 85c and maximum of 95c

generate energy by oxidizing electron donors such as hydrogen, thiosulfate, and sulfur with oxygen as the electron acceptor

second deepest branch of the bacteria

optimum of 80c and a maximum of 90c

Extraordinarily resistant to desiccation and radiation

Carry out oxygenic photosynthesis, using water as an electron source for the generation of NADH and NADPH

Carry out anoxygenic photosynthesis, using reduced molecules other than water as electron sources for the generation of NADH and NADPH