Question

Why are methanogens called as obligate anaerobes?
(1) They live in salty environments.
(2) They die in the presence of oxygen.
(3) They give off carbon dioxide as a waste product.
(4) They carry out photosynthesis using chlorophyll.

Answer 1

Methanogens, are called obligate anaerobes because

(2) They die in the presence of oxygen.

So, correct answer is (2)

This is so because they grow at a redox potential lower than -0.3 V and their energy metabolic processes are not involved with any oxygen intake. Oxygen is infact a poison for them. They produce methane as a metabolic byproduct.

Answer 2

Thanks for your question ❤❤

OPTION ( 2 ) IS CORRECT ✔✔

THANKS

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