points on usefulness of microorganisms in our lives
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They are used for creating curd, cheese etc.
Bacteria makes the meat softer by removing the tough muscles of it
Symbiotic bacteria present in the root nodules of the leguminous plants convert the atmospheric nitrgen into useful nitrogen compounds
Bacteria helps in the decomposing of the dead remains of plants and animals.
Yeast is used for making the bakery products like bread, cakes, muffins,etc and food items like idli, dosa,dhokla,etc.
Yeast is added to molasses (a waste from sugar industry) to make ethyl alcohol.
Algae is used as an organic food for the aquatic animals
Algaes are even used as fertilizers becoz of their ability to fix atmospheric O2.
Agar-Agar which is obtained from red algae is used for making jellies and cosmetics
Some unicellular protozoans like zooplanktaon act as link in the food chain in the aquatic animals.
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microorganisms are also helpful in making alcohol and some medicine... in making curd lactobascillus is helpful and in our body also many friendly microorganisms protects us by making antibodies.