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Question
Explain the uses of micro-organisms.
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Solution
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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RELATED QUESTIONS
The bread or idli dough rises because of ______.
Give reasons.
Fodder is soaked in water before offering to cattle.
Complete the paragraph using proper words:
(Mechanical, Rhizobium, Aquatic, Toxic, CO2, Nitrogen, Pseudomonas, Amoeba, Bacteria, Hydrocarbons)
Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to _______ organisms. It is not easy to remove the oil layer from surface of water by _______ method. However, bacteria like _______ spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these _______ are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the _______ and bring about the reaction of carbon with oxygen. _______ and water is formed in this process.
A clean (smokeless) fuel.
Methane gas is produced by microbial oxidation of industrial waste.
Microbes have the natural ability of decomposing the man-made chemicals.
Explain – Importance of microbes in sewage (water) treatment in cities.
Microorganism can be seen with the help of a _______.
Match the microorganisms given in the Column A to the group to which they belong in Column B.
| Column A | Column B |
| (a) Lactobacillus | (i) Algae |
| (b) Aspergillus | (ii) Protozoa |
| (c) Spirogyra | (iii) Fungi |
| (d) Paramecium | (iv) Bacteria |
Agaricus is a biocontrol agent.
