You have drained a pond on your property to make it deeper.In the process of using a machine to dig, you find that the mud is black and smells terrible.Your prediction is that ______ bacteria predominate in this area of the mud.

Question

Quizplus · Accepted Answer

The black color and terrible smell suggest the presence of sulfur-reducing bacteria, which use sulfur compounds as electron acceptors in respiration and produce hydrogen sulfide gas as a byproduct. Denitrifying bacteria use nitrate as an electron acceptor, nitrifying bacteria oxidize ammonia or nitrite, nitrogen-fixing bacteria convert atmospheric nitrogen to a usable form, and sulfur-oxidizing bacteria use sulfur compounds as electron donors in respiration.

You Have Drained a Pond on Your Property to Make