Explanation:
Exp:A Louis Pasteur observed that when yeast is exposed to aerobic conditions (in the presence of $\mathrm{O}_{2}$ ), their glucose consumption and ethanol production drop, whereas in the presence of $\mathrm{O}_{2}$ glucose consumption increases several fields. Reason for the decrease in consumption of glucose is that fermentation results in the production of 2 ATPs per glucose whereas aerobic respiration gives 32 ATPs per glucose. Hence, for the generation of same amount ATP to perform essential metabolic activities; more consumption of glucose is needed in anaerobic condition.
