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Useful and Harmful Microbes — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceUseful and Harmful Microbes3 Marks
Question
What is fermentation?
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Answer

  • Yeast uses sugar for food.
  • Yeast grows and multiplies rapidly due to the carbon compounds in the sugar solution.
  • In the process of obtaining nutrition, yeast cells convert the carbohydrates in the food into alcohol and carbon dioxide.
  • Also, the bacteria Lactobacilli convert lactose, the sugar in milk into lactic acid.
  • This process is called fermentation.

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