8. A new microbe has been discovered in the rumen(反芻胃) 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 the:
(A) Domain Eukarya, Fungi
(B) Domain Eukarya, Protists
(C) Domain Eukarya, Protozoa
(D) Domain Bacteria
(E) Domain Archaea