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The conversion of sugar into alcohol by yeast is called:

AFermentation
BCarbonisation
CPasteurisation
DVaccination
Answer & Solution
Correct answer: A. Fermentation
1. Yeast grows on natural sugars in grains and fruit. 2. Sugar becomes alcohol by fermentation. 3. Wine and vinegar are made this way. _Source: syllabus Science, Chapter 2, Microorganisms: Friend and Foe._
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