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Methanogens are
Methanogens are
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The correct option is B anaerobic bacteria that can produce methane from carbon dioxide and hydrogen
Methanogens or methanogenic bacteria are obligate anaerobic bacteria that respire in the absence of oxygen. They reduce carbon dioxide in the presence of hydrogen to form methane. This process helps in the generation of ATP (adenosine triphosphate) which serves as energy currency.
Methanogens are extremophiles which can survive in a wide range of extreme temperatures (4°C - 100°C). They are unable to survive in presence of oxygen and are commonly found in marshes, bogs, swamps, rumen (first out of four stomachs present in cows, buffaloes, etc) of cattles, etc. One common example of a methanogenic bacteria is Methanobacterium.
Methanogens can help in cellulose digestion by utilising the end products of cellulose degradation by decomposer bacteria to form methane. They are largely used for production of biogas by the anerobic digestion of sludge (wastes) left after sewage treatment of water. Biogas is a gaseous mixture of methane and carbondioxide that can be used as an eco-friendly fuel as it releases very little concentration of harmful gaseous pollutants while burning.
Aerobic bacteria are the ones which can only respire in presence of oxygen and die in its absence.
Facultative aerobes are anaerobic bacteria which generally respire in absence of oxygen but can also survive in its presence.
Facultative anaerobic bacteria are those which generally respire aerobically in presence of oxygen but can also survive in its absence.
Methanogens or methanogenic bacteria are obligate anaerobic bacteria that respire in the absence of oxygen. They reduce carbon dioxide in the presence of hydrogen to form methane. This process helps in the generation of ATP (adenosine triphosphate) which serves as energy currency.
Methanogens are extremophiles which can survive in a wide range of extreme temperatures (4°C - 100°C). They are unable to survive in presence of oxygen and are commonly found in marshes, bogs, swamps, rumen (first out of four stomachs present in cows, buffaloes, etc) of cattles, etc. One common example of a methanogenic bacteria is Methanobacterium.
Methanogens can help in cellulose digestion by utilising the end products of cellulose degradation by decomposer bacteria to form methane. They are largely used for production of biogas by the anerobic digestion of sludge (wastes) left after sewage treatment of water. Biogas is a gaseous mixture of methane and carbondioxide that can be used as an eco-friendly fuel as it releases very little concentration of harmful gaseous pollutants while burning.
Aerobic bacteria are the ones which can only respire in presence of oxygen and die in its absence.
Facultative aerobes are anaerobic bacteria which generally respire in absence of oxygen but can also survive in its presence.
Facultative anaerobic bacteria are those which generally respire aerobically in presence of oxygen but can also survive in its absence.
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