Question

Write 10 lines on the usefulness of microorganisms in our lives.

Answer 1

Hint: Microorganisms are very tiny creatures one cannot be seen through their naked eyes, they can live in any forms, they can live as the symbiont and they can live as pathogens. Not all microorganisms are harmful to man, there are some microorganisms which are very essential for plants and animals in their life.

Complete answer:
- Lactobacillus is mainly used for making curd from the milk.
- Rhizobium is the nitrogen fixing bacteria, generally present in the legume plants, where these plants fix the atmospheric nitrogen into ammonia, nitrates and nitrites which can be used by plants for their growth and development.
- In the area of food processing microorganisms are useful, mainly they ferment the food and make it tasty.
- In the area of beverages also microorganisms are very useful, especially in case of wine, the old fermented wine has more demand than the fresh wine.
- Some of the microorganisms act as composers, where they feed on plants and animals organic matter and their dead tissues and help to bring back the nutrients to the earth, this is the reason why the decomposers are apex predators and they are placed in the top of the food pyramid.
- Some of the microorganisms are useful for making medicines like antibiotics, for example penicillin is prepared from penicillium.
- Intestinal Microorganisms are very useful because they help full for synthesis of some essential nutrients, where vitamin b12 is synthesised by some intestinal bacteria.
- Many vaccines which are preparing for the preventive purpose of the disease are made from pathogens, which are microorganisms.
- Some microorganisms are used as probiotics.
- In the area of food yeast is used for so many baking items, in order to make the stuff soft.

Note: People came to know the existence of microorganisms only after the discovery of the microscope, which was invented by Antonie van Leuwenhoek, and he is the first person who discovered the existence of microorganisms from his mouth scrapings.