short note on microbes


A microorganism organism or microbe is an organism that is unicellular or lives in a colony of cellular organisms. The study of microorganisms is called microbiology, a subject that began with Anton van Leeuwenhoek's discovery of microorganisms in 1675, using a microscope of his own design.

Microorganisms are very diverse; they include bacteria, fungi, archaea, and protists; microscopic plants (green algae); and animals such as plankton and the planarian. Some microbiologists also include viruses, but others consider these as non-living. Most microorganisms are unicellular (single-celled), but this is not universal, since some multicellular organisms are microscopic, while some unicellular protists and bacteria, like Thiomargarita namibiensis, are macroscopic and visible to the naked eye.

Microorganisms live in all parts of the biosphere where there is liquid water, including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth's crust. Microorganisms are critical to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can fix nitrogen, they are a vital part of the nitrogen cycle, and recent studies indicate that airborne microbes may play a role in precipitation and weather.

Microbes are also exploited by people in biotechnology, both in traditional food and beverage preparation, and in modern technologies based on genetic engineering. However, pathogenic microbes are harmful, since they invade and grow within other organisms, causing diseases that kill people, other animals and plants.....!!@@!!

Cheerrzzzz.......!!@@!! :-)

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hiii do you want a usefull note on microbes then here it is......................

    Microbes are very tiny called microorganisms. They are more than half of the living biomass on the planet. In human body, 9 out of 10 cells are microbes. Microbes are everywhere on our body, in homes, far below the earth’s surface and up to the atmosphere, in cold, cool, warm and hot and very hot places, and even in places without oxygen. Microorganisms always live in water. They can eat all sorts of things, including oil, rocks, dead and living plants and animals. 
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The microbes are almost omnipresent ( i.e., found everywhere ) & are characterized with a very high degree of adaptability. The microbial world is spread over the entire biosphere . They live in all conditions . Some microbes are present in such places where no other life form can exist eg. Thermal vents
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Microorganisms include bacteria, fungi, archaea, protists and viruses, and are among the earliest known life forms. ... Because some microorganisms can also take nitrogen out of the air, they are an important part of the nitrogen cycle. Pathogenic, or harmful, microbes can invade other organisms and cause disease.
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