Brainliesttt ! 1. atp molecules, which are used for energy by cells, are built during all three stages of cellular respiration. which stage of cellular respiration generates the most atp molecules? the krebs cycle glycolysis the electron transport chain fermentation 2. if a yeast cell is exposed to conditions that limit the amount of oxygen available, what is the most likely result? fermentation will take place to produce low levels of atp. cellular respiration will continue to take place. glycolysis will occur and atp production will cease. the yeast will die very quickly.