Question

of the features listed below, which is the one that would not be consistent with a functioning respiratory system? using water as a terminal electron acceptor the presence of a proton pumping mechanism having electron transfer components ordered from more negative to more positive reduction potential the presence of an atpase (atp synthase) supplying some sort of electron source

Explanation:

In a functioning respiratory system, an electron source is needed for electron - transfer reactions, a proton - pumping mechanism is involved in creating a proton gradient for ATP synthesis, and a terminal electron acceptor (such as oxygen in aerobic respiration) is essential. Electron - transfer components are ordered from more negative to more positive reduction potential to drive electron flow. The presence of an ATPase (ATP synthase) is crucial for ATP production. Water is not a terminal electron acceptor in a typical respiratory system (oxygen usually is).

Answer:

Using water as a terminal electron acceptor