Electron donors for anaerobic photosystem I in green sulfur bacteria and chloroflexi include the following, EXCEPT
A) H₂S.
B) HS.-
C) H₂.
D) H₂O.
E) Fe2+.

Question

Quizplus · Accepted Answer

Anaerobic photosystem I in green sulfur bacteria and chloroflexi uses electron donors such as H₂S, HS⁻, H₂, and Fe2+ to produce NADPH, but not H₂O. Therefore, option D is the correct answer.

Electron Donors for Anaerobic Photosystem I in Green Sulfur Bacteria