Question

Which of the following best describes the role of archaebacteria in the biogas production process?

पर्याय

• They convert monomers into organic acids and hydrogen in Stage II

• They produce methane from acetate and hydrogen in the methanogenesis stage

• They perform hydrolysis of complex polymers in Stage I

• They absorb carbon dioxide and prevent biogas formation

Answer 1

Archaebacteria, specifically methanogens like Methanobacterium and Methanosarcina, are responsible for Stage III (methanogenesis). These microorganisms convert acetic acid (acetate) and hydrogen gas produced in earlier stages into methane, which is the valuable energy component of biogas. Archaebacteria are distinct from ordinary bacteria and are uniquely adapted to anaerobic environments, making them essential for biogas production. Their temperature sensitivity explains why biogas production efficiency drops in cold environments.