Bacteria in our lives

Abstract

Bacteria are an integral part of our lives. They don’t only surround us externally, but also live inside us. Most people think that the bacteria are harmful micro-organisms, but they are wrong. Along with the pathogenicity, they play an important role in ensuring the normal functioning of our body. Microbial colonies found on or in the body are normally benign or beneficial. Bacteria are the basis of the normal microflora of many systems, especially of the digestive tract. These microbial colonies carry out a series of helpful and necessary functions, such as aiding in digestion. They also protect the body from the penetration of pathogenic microbes. These beneficial microbial colonies compete with each other for space and resources.