Question

Do all microbes target the same tissue or organ, or do they target different ones? Explain with the
help of examples

Answer 1

Explanation:

Microbiologists estimate that 1014 bacteria live in and on each of us. This collection of microbes, known as the human microbiota, contains 10 times more cells than the whole human body. Their collective genomes, the human microbiome, are estimated to contain 100 times more genes than the human genome itself.1 Because of the gene-centric nature of most of the studies (discussed later), where the identities of the microbes are inferred from the genes observed, the terms, microbiome (nucleic acids) and microbiota (organisms), are used interchangeably throughout this review.

Recent research on obesity, in mice and humans, has demonstrated that microbes of the intestine can have an important influence on host energy balance. These and other studies are leading to the recognition that the communities of microbes in the gut function as an “organ” with many previously unappreciated metabolic, immunologic, and endocrine-like actions that influence human health.2 The true nature of this organ is rapidly being charted. What previously was considered a minor player in the sideshow is now approaching status as a star in the center ring.

Answer 2

Answer:

We have seen that the entire diversity seen in the living world can be classified into a few groups. This classification is based on common characteristics between different organisms. Organisms that can cause disease are found in a wide range of such categories of classification. Some of them are viruses, some are bacteria, some are fungi, some are single-celled animals or protozoans. Some diseases are also caused by multicellular organisms, such as worms of different kinds.

Different species of microbes seem to have evolved to home in on different parts of the body. In part, this selection is connected to their point of entry. If they enter from the air via the nose, they are likely to go to the lungs.This is seen in the bacteria causing tuberculosis. If they enter through the mouth, they can stay in the gut lining like typhoidcausing bacteria. Or they can go to the liver, like the viruses that cause jaundice