Advantages and Disadvantages of Bacteria

Bacteria are simple organisms; despite being simple they are useful in many ways animals and plants and also to humans in many ways. The advantages and disadvantages of bacteria are as follows:

Advantages of Bacteria:
  • Bacteria are the only organisms that can fix atmospheric nitrogen. Thus, they are essential to all living forms on earth.
  • Bacteria are the major class of decomposers. They decompose dead plants and animals into their basic elements.
  • Bacteria in the guts of cows and other animals help them breakdown the cellulose of the plants that they feed on.
  • Bacteria are the major reason for causing fermentation of milk into curd and wine into vinegar.
  • In biotechnology bacteria are used in many ways especially to manufacture proteins.
  • Bacteria can be easily modified genetically and are use in gene transfer techniques.
  • Bacteria are advantageous both economically and environmentally as they can occupy a wide variety of habitats and extreme climatic conditions and the bacterial enzymes can function in a wide range of pH and temperature.
  • Bacteria are beneficial to clean up oil spills by the process of bioremediation.
  • Bacteria can degrade a variety of organic compounds and so they can be used in processing waste and bioremediation.
  • Bacteria are also used for bioremediation process of toxic wastes from industries.
  • In chemical industries bacteria are used for production of pure chemicals.
  • In biological pest control, bacteria are used instead of pesticides.
  • Bacteria re bioengineered for the production of proteins like insulin, growth hormones and also antibodies. 
Disadvantages of Bacteria:
  • Bacteria cause diseases and infection.
  • When bacteria enter the host body, it lowers the immune system of the body which makes path to various bacteria into the body.
  • Some bacterial infections like Pneumonia can sometimes cause death.
  • Bacterial infections can breakdown skin and organs. Bacteria can cause diseases in several plants and animals also man, as most of the bacteria have parasitic mode of nutrition.
  • Bacteria produce foul smell due to their decomposing products.
  • Some plant diseases caused by bacteria are fire blight of apples, crown gall disease of crops, etc.
  • Some bacterial diseases in man are diphtheria, leprosy, tetanus, syphilis, plague, cholera, anthrax, etc.
  • Diseases like cholera, dysentery, typhoid  are water borne disease. Plague and tuberculosis are air borne disease, tetanus is contracted by wounds. Syphilis is a bacterial disease caused by sexual contact.

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Answers:one advantage of bacteria is that you can use them to make foods like cheese and bread. also , some bacteria is helpful, like they live in our bodies and they help protect us from disease. other bacterias cause disease, these are the bad bacteria. the type that can make people sick and perhaps even cause people to get so sick that they can die or maybe get really sick that they feel like they want to vomit on the floor

Question:i really need this. thank you :)

Answers:Some bacteria living on our skin do not harm humans but when harmful bacteria land on the skin, they can out compete the new species for food and space. Since these new harmful bacteria cannot compete they do not stay on the skin for long and so the harmless bacteria provide us with some protection. A disadvantage is that some bacteria is harmful and so if it lands on the skin and out competes the harmless bacteria we can become infected. Cuts on the skin can allow bacteria access to the bloodstream causing septicaemia (blood poisoning) which can be fatal

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