Why does dnp counteract or prevent the pasteur effect
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April 11, 2020Is the female parent incoupling or repulsion phase
April 11, 2020Why does dnp counteract or prevent the pasteur effect
In his studies of glucose metabolism by yeast, Louis Pasteur discovered that the sudden addition of oxygen (O2) to a previously anaerobic suspension of yeast in grape juice resulted in a dramatic decrease in the rate of glucose consumption. This “Pasteur effect†can be counteracted by the addition of 2,4-dinitrophenol (DNP), an uncoupler of the mitochondrial electron transport chain. (a) Why do yeast cells consume less glucose in the presence of oxygen? Can you estimate how much less glucose they use in the presence of oxygen? (b) Why does DNP counteract or prevent the Pasteur effect?
