In a deep-sea hydrothermal vent, green sulfur bacteria use hydrogen sulfide instead of water. What substance do they release as a byproduct?
Q1. In a deep-sea hydrothermal vent, green sulfur bacteria use hydrogen sulfide instead of water. What substance do they release as a byproduct?
Answer: Sulfur
Explanation: Sulfur bacteria use H2S as a hydrogen source, releasing sulfur; oxygen is tempting but it only comes from water splitting.