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Science Coursework The Respiration of Yeast Aim To find out what the best temperature is for yeast to respire. Prediction To first make a prediction I need to know what yeast actually is. Yeast is a fungus, but with a difference, it consists of single cells and thrives in places where there is plenty of sugar (which is why sugar is included in this investigation). Yeast can carry out anaerobic respiration, known as fermentation. Knowing that yeast is a living thing I can predict that: Yeast respires best at room temperature (35-37°C) I came to this prediction because most living things do respire best at this temperature. Yeast respires anaerobically, this is known as fermentation, the equation for it is: Glucose Ethanol + Carbon Dioxide + Energy C6H12O6 CO2 I can now also predict that bubbles of CO2 will be produced. As I'm going to have high temperatures of water in this experiment I can predict that there may be a drop...

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