Which Bacterial Genus is Responsible for Producing Ferrous Iron (Fe²⁺)

Question

Which bacterial genus is responsible for producing ferrous iron (Fe²⁺) in groundwater?
A) Alteromonas
B) Aquifex
C) Geobacter
D) Loktanella

Accepted Answer

Geobacter is a genus of bacteria known for their ability to produce ferrous iron (Fe²⁺) in groundwater through a process known as dissimilatory metal reduction. They are anaerobic bacteria that use metals such as iron as electron acceptors in their metabolism. This process has important implications for groundwater quality and environmental remediation.