On a class field trip,students swabbed,dug,and dipped samples of life from numerous places around campus.Back in lab,one of the organisms found was unknown to the professor,or any reference books available.It came from the edge of a marsh,and the sample smelled of hydrogen sulfide (rotten eggs).The single cells were found to survive only in a container that had sulfate in it,but also had the oxygen removed by burning a candle.This is likely an organism that uses _____ for cellular respiration.

Question

Quizplus · Accepted Answer

The organism can only survive in an environment without oxygen, which suggests that it is an anaerobic organism. Additionally, the fact that it can only survive in a container with sulfate suggests that it is capable of performing anaerobic respiration, which uses sulfate instead of oxygen as the final electron acceptor. Therefore, the best choice is E, anaerobic respiration.

On a Class Field Trip,students Swabbed,dug,and Dipped Samples of Life