Question

Essay on "we are the cleaners of the environment: bacteria"
500 words

Answer 1

Answer:

coli bacteria (a common lab bacteria) with genes that allowed the microorganisms to not only survive in mercury but to remove it from waste sites.

The microorganisms decompose dead organic wastes of plants and animals converting them into simple substances. These substances are again used by other plants and animals. Thus, microorganisms can be used to degrade the harmful and smelly substances and thereby cleans up the environment.

The term 'microorganisms' include bacteria, fungi, viruses and protozoa. ... But, it is a fact that microorganisms are useful to us in many ways. Microorganisms help in the production of many food iter making medicines, keeping the environment clean, in manufacturing and in research.

A microorganism is a living thing that is too small to be seen with the naked eye. Examples of microorganisms include bacteria, archaea, algae, protozoa, and microscopic animals such as the dust mite.

Explanation:

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Answer 2

Bacteria are unicellular organisms that are invisible to the naked eye. They can be found on the tops of mountains, in rivers, on land, and in ice. Bacteria have the ability to survive in severe environments such as extreme cold and extreme heat.

Bacteria : Cleaners of the environment

1. Decomposition of Organic Matter (Dead/Complex):

Bacteria play a critical role in quietly ridding nature of dead organic matter through the decomposition of dead organic matter by micobes. Bacteria utilise them as a source of nutrition, and as a result, they aid in the recycling of organic compounds trapped in dead matter.

2. Nitrogen Fixation :

• The nitrogen fixation process is aided by nitrogen-fixing bacteria such as Rhizobium and Cyanobacteria. As part of their metabolism, these bacteria convert air nitrogen to nitrates and nitrites, which they then make available to plants.
• Some plants (leguminous plants) have evolved to the point where they have formed a mutualistic relationship with the bacteria that live in their tissues.

3. Bioremediation :

• Bioremediation is the process of living organisms depleting or degrading harmful substances found in the natural environment. Bacteria are an important part of bioremediation.
• Oil spills caused by oil digging activities or mishaps on oil transport channels in the water or on the ground, for example, are very decisive to the environment's health.

4.Treatment of Waste Water

Bacteria naturally (as well as artificially) aid in the treatment of waste water because of their ability to degrade toxic compounds and contaminants.

5. As Biosensors, Bacteria :

• Traditional chemical studies for evaluating and locating harmful waste are both costly and ineffective.
• As a result, biosensors, which are genetically modified microorganisms that can detect pollutants, have been developed by scientists.
• Biosensors don't require any expensive chemicals or equipment, and they can be set up in a matter of minutes. When bacteria come into contact with a hazardous substance, they produce light. Others emit light as long as they are healthy, but when poisons destroy them, they stop.

Bacteria aid in the decomposition of deceased animals and plants, returning essential nutrients to the Earth. In a process known as bioremediation, some species also assist in the removal of harmful chemicals from the environment.

Toxic pollutants like heavy metals and petroleum are no longer detrimental to the environment thanks to bioremediation technology. Bacteria are also inexpensive and accurate harmful chemical sensors.

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