Microbes And Its Effects On Humans Essay

Microbes And Its Effects On Humans Essay

Length: 1400 words (4 double-spaced pages)

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In this world, there are very tiny creatures that millions of them can fit into the eye of a needle. It is known as microbes, which cannot be seen with naked eyes. They are believed to be the oldest form of life on earth as microbe fossils age more than 3.5 billion years back when the boiled ocean covered the earth and it was before the dinosaurs roaming the planet. [5] We couldn’t breathe or eat without microbes but they would probably be just fine without us. Microbes can be found everywhere. There are more of them in a person’s mouth than the number of people in the entire planet. There are abundant of them in the air we breathe, in the food we eat, on the ground we walk on, and they are even growing inside us! Food could not be digested, garbage could not be decomposed, plants could not grow and less oxygen is produced. This planet would not survive without these invisible companions who come in forms of bacteria, fungi, protozoa, and viruses. [1][2] It is mainly because microbes play vital roles in the systems that support every single life. The life of humans, plants and animals are dependant on various types of relationships with microbes. [2]
There are microbes that are living in human body and create a symbiotic relationship which means two living things live together and it is always beneficial rather than harmful. [2] It is known as normal microbial flora. Understanding about normal microbial flora of human body, their roles and pathogenicity is very important to create healthy precautions to avoid any infectious diseases caused by them. In a healthy human body, it is estimated that there are about 10 trillion cells including nerve cells, epithelial cells, muscle cells and etc. and the number of normal microbial flora ...


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...become tropism and grow in different parts of the body. Their roles are very important in maintaining a healthy body as they are secreting some nutrients and antibody that cannot be produced by human on its own such as vitamin K and vitamin B12. In addition, their roles are recognized as human is producing cultured of living bacteria drink such as Yakult and Vitagen. The drinks are good for the stomach as they have good bacteria. Next is we should be aware of the pathogenicity of normal microbial flora as they can be virulent at anytime and cause infectious diseases. It sounds like they are just waiting for an opportunity to be pathogenic and harming the host. Although they give us some benefits, they also can be harmful to us. It is our responsibility to take care of ourselves, and improve the hygiene so that the normal flora will stay as our beneficial companions.

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