Abacterium such as pseudomonas uses nitrate as a final electron acceptor in an electron transport system. all the below statements are true except the process does not yield as much atp. they can respire without o2. the process requires an electron donor. the final enzyme/complex in the electron transport system is something other than cytochrome oxidase they require light.

They require light

Explanation:

The bacteria such as Pseudomonas is gram negative, rod shaped, bacterium which has an extraordinary nutritional versatility.

These bacteria is obligate respirer, which uses aerobic respiration as its optional metabolism. They can also respire anerobically by the help of the nitrate or other alternative. In this case the electron acceptor is not cytochrome oxidase.  

The can respire without oxygen, but this process does not yields much ATP  as like that of oxygen dependent respiration.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

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