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  5. Microorganisms : Friend and Foe

8th Class Science Microorganisms : Friend and Foe Question Bank Microorganisms

  • question_answer
    What causes the dough to rise when yeast is added to it?

    A)  An increase in temperature

    B)                         An increase in the amount of substance

    C)                         An increase in the amount of released water by yeast cells

    D)                         The release of carbon dioxide gas

    Correct Answer: D

    Solution :

    The release of carbon dioxide gas causes dough to rise when yeast is added to it. (Fermentation)


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