Questions: Question 18 During the process of fermentation: Yeast converts the water in grape juice into alcohol Yeast converts the excess alcohol in wine into sugar and acids Yeast converts the acid in grape juice into alcohol Yeast converts the sugar in grape juice into alcohol

Question 18 During the process of fermentation: Yeast converts the water in grape juice into alcohol Yeast converts the excess alcohol in wine into sugar and acids Yeast converts the acid in grape juice into alcohol Yeast converts the sugar in grape juice into alcohol
Transcript text: Question 18 During the process of fermentation: Yeast converts the water in grape juice into alcohol Yeast converts the excess alcohol in wine into sugar and acids Yeast converts the acid in grape juice into alcohol Yeast converts the sugar in grape juice into alcohol
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Solution

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The answer is the last one: Yeast converts the sugar in grape juice into alcohol.

Explanation for each option:

  1. Yeast converts the water in grape juice into alcohol: This is incorrect. Yeast does not convert water into alcohol. The primary role of yeast in fermentation is to convert sugars into alcohol and carbon dioxide.

  2. Yeast converts the excess alcohol in wine into sugar and acids: This is incorrect. Yeast does not convert alcohol back into sugar and acids. Once alcohol is produced, yeast cannot reverse the process.

  3. Yeast converts the acid in grape juice into alcohol: This is incorrect. Yeast does not convert acids into alcohol. The acids in grape juice remain largely unchanged during fermentation.

  4. Yeast converts the sugar in grape juice into alcohol: This is correct. During fermentation, yeast metabolizes the sugars present in grape juice and converts them into alcohol (ethanol) and carbon dioxide.

Summary: During the process of fermentation, yeast converts the sugar in grape juice into alcohol.

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