A new microbe has been discovered in the rumen of sheep. Microscopy shows no evidence of a nuclear membrane and biochemical studies of the cell wall demonstrate the lack of peptidoglycan. Metabolic studies show that this microbe generates methane. This microbe would most likely be classified in ________.

A. domain Bacteria
B. domain Eukarya, Kingdom Fungi
C. domain Eukarya, Protists
D. domain Archaea


Answer: D

Biology & Microbiology

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