What are antibiotics? What precautions must be taken while
What are the major groups of microorganisma?
Name the microorganisms which can fix atmospherie nitrogen in the
Write 10 lines on the machines of microorganisms in our lives
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Witte a short paragraph on the harmhuil ellects of microorganisms
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Answer:
1.Ans: Precautions to be taken while using antibiotics are:
Antibiotics should be taken in the right amount and at the right time. A wrong dose of antibiotics makes the drug ineffective. Also, excessive consumption of drugs may kill the useful bacteria present in our body.
2. Ans: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or cell clusters. Microorganims are widespread in nature and are beneficial to life, but some can cause serious harm. They can be divided into six major types: bacteria, archaea, fungi, protozoa, algae, and viruses.
3.Ans: Free-living nitrogen-fixers include the cyanobacteria Anabaena and Nostoc and genera such as Azotobacter, Beijerinckia, and Clostridium.
4.Ans: (1).Microorganisms are used to prepare vaccines for various diseases. (2.) They are useful for agriculture sector, as they enhance the fertility of soil by fixing nitrogen. (3.) They work as natural cleaners, as they decompose the dead bodies of plants and animals. (4). They are used in winemaking, baking, pickling and other food-making processes. (5). Alcoholic fermentation by yeast is widely used in the preparation of wine and bread. (6). A bacterium Lactobacillus promotes the formation of curd. (7). Lactobacillus is used to form curd from milk.( 8.) Rhizobium present in the roots of pulse plants fix nitrogen from the air and supply nitrogen compounds to the pulse plants.( 9.) Micro-organisms are also used in winemaking, baking, pickling, and other food-making processes.
5.Ans: Some serious diseases like anthrax is also caused in animals by the microbes. Microbes also cause diseases of plants like blights in potatoes, sugarcanes, oranges etc. They also reduce the yield. Microbes grow on food products and render them unfit for consumption.