10. a student isolates an unknown bacterial sample from the bottom of a swamp area. the student discovers that this species of bacteria is able to live and grow in an oxygen-free environment, but it requires a nitrate-rich soil.

which of the following respiration pathways is this species of bacteria most likely using?

a. anaerobic respiration
b. ethyl alcohol fermentation
c. aerobic respiration
d. lactic acid fermentation