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प्रश्न
Explain the uses of micro-organisms.
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उत्तर
Microorganisms have found widescale application in various industries. Some of their applications are:
- Use of Microorganisms in Food Industry:
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Lactobacillus bacterium promotes the conversion of milk into curd.
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Yeast is used in the preparation of breads, pastries, and cakes.
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- Use of Microorganisms in Vaccine Production:
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Protection of the body from the attack of various disease-causing microorganisms through vaccines is known as vaccination.
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A vaccine includes dead or weakened microbes that trigger the production of antibodies in the body.
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- Use of Microorganisms in Increasing Soil Fertility:
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Blue-green algae and Rhizobium are called biological nitrogen fixers.
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They fix atmospheric-free nitrogen to enhance soil fertility.
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These are just a few examples that highlight the commercial importance of these microorganisms.
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संबंधित प्रश्न
Give scientific reasons.
Microbial enzymes are used instead of chemical catalysts in chemical industry.
What is role of microbes in compost production?
What are the benefits of mixing ethanol with petrol and diesel?
Find an odd one out.
Saccharomyces cerevisiae : Ethanol : : Aspergillus oryzae : ________________
Give scientific reason.
Microbial enzymes are eco-friendly.
Briefly explain the environmental role of microorganisms in pollution control?
Observe the figure and write the answers to the questions asked.

- Name the above figure.
- What is it used for?
- Which gas is formed in it?
- How is this gas formed?
- What is done with sewage?
Complete the paragraph by selecting the appropriate option in parentheses.
(energy, microbial, erosion-proof, reused, purification, environmentally friendly)
Nowadays, instead of chemical catalysts, _______ enzymes are used in the chemical industry. These enzymes are active at low temperature, pH and pressure; due to which _______ is saved and _______ instruments are also not necessary. Enzymes carry out specific processes; hence unnecessary by-products are not formed due to which expenses on _______ are minimised. In case of microbial enzymatic reactions elimination and decomposition of waste material is avoided and enzymes can be _______ Hence, such enzymes are _______.
______ bacteria is used for industrial production of yogurt.
