Summary Of The Science Of Bread Yeast

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higher amounts of gas than vegetables and other foods. Yeast, in the presence of sugar (sucrose) and oxygen, uses aerobic respiration to create water and the gas carbon dioxide. According to the article Science of Bread Yeast-air Balloons Activity, “Yeast is tiny: Just one gram holds about 25 billion cells. That amount of fungi can churn out a significant amount of carbon dioxide, provided it has the simple sugars it uses as food” (Exploratorium, 2015). Without the presence of water, yeast can use enzymes in itself to break down the sugar, called anaerobic respiration.
The sugar that the yeast breaks down is sucrose, a polysaccharide. Sucrose is broken down in the liver by the enzyme sucrase. The enzyme cuts sucrose in half leaving it as …show more content…

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