Question

write a note on useful and harmful bacteria ​

Answer 1

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Answer:

Some bacteria are good for you, including the bacteria in your digestive system, or gut. These bacteria help to break down food and keep you healthy. Other good bacteria can produce oxygen are used to create antibiotics.

Harmful effects of microorganisms: Bacteria: Causes various diseases such as typhoid, diarrhea, and cholera. Fungi: Causes a large number of diseases in plants and in animals such as rust diseases in plants, fruit rot in apple, red rot in sugar cane and ring worm disease in human beings.

Answer 2

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Along with the beneficial importance of bacteria, they also have some harmful effect on the human body. Some bacterial species are the source of causing diseases like typhoid fever, tuberculosis, cholera, syphilis and food borne illness. To kill harmful bacteria, antibiotics are used.