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  4. Assertion: Yeasts such as Saccharomyces cerevisiae are used in baking industry. Reason: Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

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Q. Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry.
Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

Microbes in Human Welfare

Solution:

Yeast is a fermentation agent. It is a known fact that yeast raises bread dough to rise and hence, Yeast is also used to increase the volume, making the dough porous and the product soft. It is the yeast that helps the dough to rise.