Question

Which of the following is a key physiological characteristic and nutritional mode of methanogens?

Options

• Strictly aerobic with a saprophytic mode of nutrition

• Strictly anaerobic with an autotrophic mode of nutrition

• Microaerophilic with a parasitic mode of nutrition

• Facultative anaerobic with a heterotrophic mode of nutrition

Answer 1

Methanogens are strictly anaerobic microorganisms that cannot survive in the presence of oxygen, grow on cellulosic material, and possess an autotrophic mode of nutrition.