What is Pathogens ?
Disease-causing micro – organisms are called Pathogens.The Nitrogen fixing cyanobacteria (blue green algae)
What is biological nitrogen fixers?
Some bacteria are able to fix nitrogen from the atmosphere to enrich soil with nitrogen and increase its fertility. These microbes are commonly called biological nitrogen fixers.
What is an antibodies ?
When a disease-carrying microbe enters our body, the body produces antibodies to fight the invader.
What is Vaccine ?
substance which is used to stimulate the production of antibodies, and provide immunity against one or a few diseases. vaccine works. Several diseases, including cholera, tuberculosis, smallpox and hepatitis can be prevented by vaccination.
Who was discovered vaccine of small pox ?
. Edward Jenner discovered the vaccine for smallpox in 1798.
Discovery of an antibiotic
In 1929, Alexander Fleming was working on a culture of disease causing bacteria. Suddenly he found the spores of a little green mould in one of his culture plates. He observed that the presence of mould prevented the growth of bacteria. In fact, it also killed many of these bacteria. From this the mould penicillin …
What is an antibiotics?
Medicines kill or stop the growth of the disease-causing microorganisms. Such medicines are called antibiotics. e.g Streptomycin, tetracycline and erythromycin etc.
Medicinal Use of Microorganisms
Medicinal Use of Microorganisms The source of these medicines is microorganisms. These medicines kill or stop the growth of the disease-causing microorganisms. Such medicines are called antibiotics. These days a number of antibiotics are being produced from bacteria and fungi. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from …
What is fermentation?
sugar has been converted into alcohol by yeast.This process of conversion of sugar into alcohol in absence of oxygen is known as fermentation.
Commercial Use of Microorganisms
Microorganisms are used for the large scale production of alcohol, wine and acetic acid (vinegar). Yeast is used for commercial production of alcohol and wine. For this purpose yeast is grown on natural sugars present in grains like barley, wheat, rice, crushed fruit juices, etc.This is the smell of alcohol as sugar has been converted …