NCERT Science for class 8 Chapter 2 Microorganism In this article, we will discuss the topic of Class 8 Science . We have already discussed microorganism and its types. We will now discuss ‘the uses of microorganism ’. Microorganisms benefit us in a number of ways. Their uses can be divided into four categories: commercial, medicinal, agricultural, and environmental. Commercial uses are listed as below :- Making curd and cheese – A protein called casein present in milk coagulates to form a curd. For casein to coagulate the milk has to be made acidic. A bacterium called Lactobacillus, present in the spoonful of curd added to the milk converts the lactose sugar present in milk to lactic acid.The process of conversion of a sugar into an acid or an alcohol by the action of microorganism is called fermentation . Making alcoholic beverages – Production of alcoholic beverages such as beer and wine involves fermentation of sugar pres...
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