alleryStart learning →Which group of Archaea reduces carbon dioxide to methane in order to oxidize NADH?
AThe halophiles
BThe methanogens
CThe cyanobacteria
DThe thermophiles
Answer & Solution
Correct answer: B. The methanogens
1. Certain prokaryotes, including some bacteria and Archaea, use anaerobic respiration.
2. The group of Archaea called methanogens reduces carbon dioxide to methane in order to oxidize NADH.
3. These microorganisms live in soil and in the digestive tracts of ruminants such as cows and sheep.
4. Cyanobacteria are photosynthetic organisms that release oxygen, so they are the opposite case.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.5 Metabolism without Oxygen_
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