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Question

Assertion: Wine, bread and cakes are products of microbial activity
Reason: Yeast breaks down glucose into carbon dioxide and ethanol

A
Both the assertion and reason are true and the reason is the correct explanation of the assertion
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B
Both the assertion and reason are true but the reason is not the correct explanation for the assertion
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C
The assertion is true but the reason is false
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D
Both assertion and the reason are false
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Solution

The correct option is A Both the assertion and reason are true and the reason is the correct explanation of the assertion
Fermentation is an enzyme catalysed process, where organisms convert sugar to alcohol or an acid anaerobically. It is widely used in the production of yogurt, bread, alcoholic beverages like beer and wine, biofuels, etc.

Saccharomyces cerevisiae is a yeast which converts glucose into ethanol and carbon dioxide.

For the production of bakery products and bread, yeast consumes the sugar in the dough and releases carbon dioxide gas and ethanol. Carbon dioxide gets trapped inside the bread dough, thus making the dough rise. Alcohol, on the other hand, gets evaporated during baking.

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