Some Bacteria Use H₂S Instead of H₂O in Photosynthesis, and They

Question

Some bacteria use H2S instead of H2O in photosynthesis, and they release
A) ethanol.
B) sulfur.
C) carbon monoxide.
D) acetic acid.
E) oxygen.

Accepted Answer

Some bacteria, such as purple sulfur bacteria, use hydrogen sulfide (H2S) instead of water in photosynthesis and release sulfur as a byproduct.