Ms. Green's biology students were studying cellular respiration. Using baking yeast to test the rate of fermentation, student gr
oups mixed yeast with different manipulated variables. The groups used the height of the carbon dioxide bubbles produced in a test tube to determine which variable(s) produced the highest rate of fermentation. Students hypothesized that adding ______________to a sixth test tube would produce the greatest amount of carbon dioxide. the answer is warm water, yeast, and lactose.
Students hypothesized that adding lactose to a sixth test tube would produce the greatest amount of carbon dioxide.
This is because lactose is a sugar molecule that is the food source for the yeast.
Fermentation is a metabolic pathway that occurs anaerobically, meaning in the absence of oxygen (O2). It includes the process of glycolysis with some extra reactions which make alcohol.
