Question

Which bacterium is an example of a methanogen commonly found in anaerobic sludge during sewage treatment?

Options

• Lactobacillus

• Streptococcus

• Saccharomyces cerevisiae

• Methanobacterium

Answer 1

Methanogens are anaerobic bacteria that produce methane gas during the digestion of organic matter. Methanobacterium is a representative methanogen commonly present in anaerobic sludge digesters.