Sita’s mother kneaded some flour with sugar, warm water and yeast. After some time, she observes that the dough rises. a) Name the process and the scientist who discovered it. b) Explain the reason for her observation.
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a) The process was fermentation and the process was discovered by Louis Pasteur.
b) Yeast reproduces rapidly and produces carbon dioxide during respiration. Bubbles of the gas fill the dough and increase its volume. This is the basis of the use of yeast in the baking industry for making breads, pastries and cakes.
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