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LAKHMIR SINGH & MANJIT KAUR-MICRO - ORGANISMS : FRIEND AND FOE.-EXERCISE
- What are micro - organisms ? Give any two examples of micro organisms.
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- Can microorganisms be seen with the naked eyes? If not, how can they b...
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- How do houseflies carry disease - causing microbes ( or pathogens) ?
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- State any two ways of preventing diseases spread by houseflies.
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- How do mosquitoes carry disease - causing micro - organisms and sprea...
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- Mention any three ways of preventing diseases spread by mosquitoes.
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- What is meant by fermentation ? Name the scientist who discovered ferm...
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- Which micro - organism converts sugar into alcohol during fermentation...
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- How do micro - organisms help in increasing soil fertility ?
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- How do micro - organisms help in cleaning the environment ?
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- What are antibiotics? What precautions must be taken while taking anti...
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- Why are antibiotics not effective against 'common cold' and 'flu' ?
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- What is the full form of HIV ? Name the disease caused by HIV.
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- Discribe how, curd is made from milk. Name the bacterium which convert...
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- Name the micro - organism used in bread - making which makes the bread...
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- What is food poisoning ? How is food poisoning caused ?
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- What is meant by food preservation ? Name any five methods of preservi...
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- How do you preserve cooked food at home ?
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- Why should we not let water collect anywhere in the neighbourhood ?
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- Name one animal disease each caused by virus .
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