difference of a non pathogenic bacteria and a pathogenic bacteria

These are bacteria which occur in the body of animals and plants, obtaining their organic food from there. Most of these bacteria are pathogenic , causing serious diseases in the host organisms either by exploiting them or by releasing poisonous secretions called toxin..

Antibiotics are substances obtained from microorganisms - which are antagonistic to growth of other pathogenic bacteria. Antibiotics are widely used in the field of medicines to cure number of diseases. Some of the antibiotics - which can be produced by use of microorganisms on ..

Living organisms are exposed to various external or foreign substances and disease causing organisms like bacteria, viruses and fungi. Such organisms which can cause a disease are known as Pathogens. It is observed that some human beings are more prone to a certain disease..

Introduction - Living organisms are exposed to various external or foreign substances and disease causing organisms like bacteria, viruses and fungi. Such organisms which can cause a disease are known as Pathogens. It is observed that some human beings are more prone to a certai..

Microbial resource is a resource not seen by naked eyes, like all other resource. But it is a powerful resource existing in all parts of globe - in atmosphere, on the earth, inside the earth, on the sea and inside sea, inside the bodies of animals and plants. Although large number of microbial spec..

The fact that DNA is genetic material came from the experiments using bacteria and viruses. The first series of experiments were performed by a British bacteriologist F. Griffith in 1928, using the bacterium Diplococcus pneumoniae which causes pneumonia in mammals. Griffith noticed tha..

In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible and the repres..

The filtered water is disinfected by the process of chlorination, ozonation and ultraviolet irradiation. Chlorine kills pathogenic bacteria but has no effect on spores and viruses that cause diseases like polio, viral hepatitis and jaundice. Ozone eliminates undesirable odour, ..

The cellwall of prokaryotes like bacteria is composed of peptidoglycans. Apart from maintaining the shape and size of plant cells, the cell wall is involved in some specific functions such as Protection against the attack of pathogens Providing mechanical support Allowing moveme..

These are the various pathogenic micro-organisms which may enter the water along with sewage or other wastes. These microbes, mainly bacteria and viruses, can cause various diseases such as cholera, typhoid, dysentery, gastroenteritis, polio, hepatitis etc. in the water supply ..