Role of diagonal green b in presence of oxygen during anaerobic respiration in yeast solution
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Under anaerobic conditions, yeast cells break down sugars, releasing carbon dioxide gas. Evidence that fermentation is taking place in a yeast culture can be provided by bubbling the gas into an indicator solution.
There are two flasks on demonstration: one contains a sugar and yeast solution and the other contains a 10% sucrose solution. Each flask has a bent U-tube from the flask into the cylinder filled with a bromothymol blue indicator solution. If carbon dioxide passes from the U-tube into the cylinder, the solution in the cylinder will turn yellow. In our case, since the reaction occurred in the blue indicator solution, the resulting color was green (yellow + blue).
Under anaerobic conditions, yeast cells break down sugars, releasing carbon dioxide gas. Evidence that fermentation is taking place in a yeast culture can be provided by bubbling the gas into an indicator solution.
There are two flasks on demonstration: one contains a sugar and yeast solution and the other contains a 10% sucrose solution. Each flask has a bent U-tube from the flask into the cylinder filled with a bromothymol blue indicator solution. If carbon dioxide passes from the U-tube into the cylinder, the solution in the cylinder will turn yellow. In our case, since the reaction occurred in the blue indicator solution, the resulting color was green (yellow + blue).
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