To What Extent Does Sugar Affect Yeast Growth

As we can see on the graph we can tell how clearly glucose has highest respiration rate of 455 ppm/min. Sucrose is second with 391 ppm/min, then fructose with 231 ppm/min and lastly lactose with 92 ppm/min. We can see a clear trend, that glucose had the highest rates and that lactose was the lowest, so we see a clear downwards sloping trend, which was also expected. This suggests that yeast respires best with glucose instead of sucrose fructose or lactose. To explain this process, we must first understand how sugar affects yeast growth. First of all yeast is a fungus, meaning that it needs sugars to supply it energy. Yeast can also release oxygen like human beings, called respiration. So technically speaking the more sugars there are the more