Question 30

(Multiple Choice)

What would most likely result if an exponentially growing culture of Lactobacillus spp. fermenting glucose was accidentally transferred into a highly aerated environment?


A) Aerobic catabolism of glucose would begin rather than aerobic degradation, due to the presence of O₂.
B) Fermentation of glucose would continue, because the cells are insensitive to O₂ despite lacking aerobic metabolism capabilities.
C) The cells would halt their metabolism due to the presence of N₂, which acts as a global repressor of fermentation in this group.
D) The population would die due to the presence of O₂, because it is a strict anaerobe.

Answer