In methanogenesis from CO₂ and H₂, the initial incorporation of H₂ requires a coupled gradient of which ion?

Question

Quizplus · Accepted Answer

The initial step in methanogenesis from CO₂ and H₂ involves the reduction of CO₂ to formate, which is then reduced to H₂ with the help of the enzyme formate dehydrogenase. The H₂ is then utilized by methanogens to produce methane. The initial incorporation of H₂ requires a coupled gradient of sodium ions, which is achieved through the action of a sodium-proton antiporter. Therefore, the correct answer is A) sodium.

In Methanogenesis from CO₂ and H₂, the Initial Incorporation of H₂