Commercial Use


 
 
Concept Explanation
 

Commercial Use

Useful Microorganisms: Microorganisms benefit us in a number of ways. Their uses can be divided into four categories: commercial, medicinal, agricultural, and environmental.

Commercial Uses: Some of the commercial uses of microorganisms are given below.

The production of cheese and paneer (cottage cheese) also involves the use of bacteria like Lactobacillus and Streptococcus.

Curd and cheese manufacturers also add a substance called rennet (usually obtained from stomach linings of young cattle) to milk to make the process faster. Addition of rennet results in the formation of lactic acid, which makes the milk more acidic.

Making alcoholic beverages: Production of alcoholic beverages like beer and wine involves fermentation of sugar present in barley and grapes etc. by a microscopic fungus called yeast. Fermentation by yeast produces alcohol and carbon dioxide.

Making toothpaste: Shells of diatoms (a type of algae) are used in toothpaste to give it a gritty texture that helps in cleaning teeth. Xanthum gum, obtained from the bacteria Xanthomonas campestris, is also used in making toothpaste.

Sample Questions
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Question : 1

The gas released during fermentation of sugar by yeast cells is __________________.

Right Option : A
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Explanation
Question : 2

Which of the following organisms is used in the preparation of alcohol?

Right Option : C
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Explanation
Question : 3

The process which converts sugar into alcohol is called______________.

Right Option : C
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Explanation
 
 
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