Question

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

• A. Both assertion and reason are true and reason is the correct explanation for assertion
• B. Both reason and assertion are true but reason is not correct explanation for assertion
• C. Assertion is true but reason is false
• D. Assertion is true but reason is false

Answer 1

The correct option is A Both assertion and reason are true and reason is the correct explanation for assertion

Baker’s yeast (Saccharomyces Cerivisiae) is added to flour during kneading. Yeast secreted enzymes like amylase (changes some starch to maltase), maltose (maltose to glucose) and zymase (glucose to ethyl alcohol and carbon dioxide). The dough swells up or leavens. Leavened dough is baked and both alcohol and carbon dioxide evaporate. The bread becomes soft and porous.