NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If yeast, sugar and water are mixed together, the yeast will metabolize the sugar using the process of fermentation. If this process takes place in a sealed container, the bubbles produced during fermentation will be trapped. What substance are these bubbles made of?
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lactic acid
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carbon dioxide
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oxygen
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methane
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ethanol
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Explanation:
Detailed explanation-1: -if yeast, sugar and water are mixed together, the yeast will metabolize the sugar using the process of fermentation. if this process takes place in a sealed container, the bubbles produced during fermentation will be trapped. what are these bubbles? anaerobic respiration differs from aerobic respiration in that..
Detailed explanation-2: -Sugar is nutrition for yeast, it consumes it and produces CO2. Yeasts produces enzymes that react with sugar. The yeasts, like most fungi, respires oxygen (aerobic respiration), but in the absence of air they derive energy by fermenting sugars and carbohydrates to produce ethanol and carbon dioxide.
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