Give reasons for the following. 5. Yeast is used in the preparation of alcoholic beverages
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Yeasts are the main fermentor and alcohol producer in the production of wine, beer and other alcohol drinks. The main yeast species used is Saccharomyces cerevisiae. It ferments the sugars, coming from different sources, e.g., grapes for wine, barley for beer, to alcohol and carbon dioxide.
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- Answer: Yeast respires anaerobically to produce ethanol and CO2. Due to this property, it is used in the production of ethanol and alcoholic drinks.
Explanation:Yeast is used in wine and beer industries because it produces alcohol. The role of yeast in winemaking is the most important element that distinguishes wine from grape juice. In the absence of oxygen, yeast converts the sugars of wine grapes into alcohol and carbon dioxide through the process of fermentation.
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