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Cell Structure and Micro-organisms — Science STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7ScienceCell Structure and Micro-organisms2 Marks
Question
Bread rises during baking.
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Answer

  1. The process of fermentation is used in baking, for example, in making bread. Yeast is added to make the dough rise.
  2. The fermentation is a chemical process of conversion of one type of carbon compound into another type of carbon compound by the action of micro-organisms.
  3. Heat is generated in this process. Carbon dioxide $(CO_2)$ and some other gases are released.
  4. These gases cause an increase in volume so the bread dough rises.

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