Match each extreme thermophile group with its description. 2 2 Sulfur oxidizers Nanoarchaea Thermophilic extreme acidophiles 3 1 points Methane-generating hyperthermophiles 4 Sulfur-reducing hyperthermophiles References Match each of the options above to the items below. Oxidize H2, using CO2 as a terminal electron acceptor to yield gas. Can grow in temperatures as high as 97°C. Obligate anaerobes that use sulfur as a terminal electron acceptor, generating H2S. Often isolated from hot sulfur-containing environments such as sulfur hot springs and hydrothermal vents. Some even have possible growth temperatures above 100°C. Grows as 400 nm spheres attached to the surface of - and most likely parasitizing - the Ignicoccus species. Obligate aerobes that use O2 as a terminal electron acceptor, generating sulfuric acid. Only grow above 50°C and at a pH between 1 and 6. Members grow optimally at or below PH 2. One was originally isolated from a coal waste pile. Two others were isolated inhabiting acidic areas in regions that spew sulfurous gases.
