Who was Robert Koch? Heinrich Hermann Robert Koch (1843–1910)was a German physician and microbiologist. He is regarded as one of the founder of modern bacteriology. He is most famous for discovering the specific bacteria causing deadly infectious diseases. Anthrax is caused by Bacillus anthracis. Tuberculosis is caused by Mycobacterium tuberculosis. Cholera is caused by Vibrio … Read more
What is Germ Theory of Disease? Germ theory of disease is a scientific theory. It states that many infectious diseases are caused due to invasion of host organism by microscopic pathogens (germs). These germs are not seen by naked eye. These pathogens includes bacteria, viruses, fungi and protozoa. The germs enters in body and then … Read more
Crystals in urine is the condition in which solid crystalline particles are seen in urine. It is referred to as crystalluria. These crystals are formed when urine contains excess amount of minerals and waste products and they are precipitated out as solid particles. In normal conditions, kidneys filter blood and different dissolved solutes are excreted … Read more
Transmission of diseases is defined as the process by which an infectious agent is transferred from its natural habitat (reservoir) to a new susceptible host. It is the movement of pathogens from one individual to another or from environment to human. This process is an essential part of the chain of infection. Without transmission the … Read more
What is Urinary Tract Infection (UTI)? Urinary Tract Infection (UTI) is a common bacterial infection of urinary system. It is affecting any part of the urinary system which includes bladder, urethra, ureters and kidneys. It is most frequently caused by Escherichia coli (E. coli). It occurs more often in women than in men. UTI is … Read more
What are Bt Crops? Bt crops are the transgenic crops in which a gene from the soil bacterium Bacillus thuringiensis is introduced into the plant. It is the gene that produces special insecticidal proteins inside the plant body and these proteins are referred to as Cry or Vip proteins. When insect larvae feed on the … Read more
What is Biotechnology? Biotechnology is the application of biological organisms, cells or their components in order to produce useful products. It is the branch of science where biology is combined with technology for human benefit. In this process living organisms are used to develop or modify products and improve different biological systems. The term biotechnology … Read more
What is Bombardment (Biolistics) Method? Bombardment (Biolistics) method is a direct physical technique used to introduce foreign DNA into living cells. It is also referred to as the gene gun method. In this process, the desired DNA is first coated on very small and dense metal particles such as gold or tungsten. These DNA coated … Read more
What is the Electrofusion of Plant Cells? Electrofusion is a technique used for the fusion of two or more plant cells by the application of an electric field. It is commonly used for the fusion of plant protoplasts in plant biotechnology. In this method the plasma membranes of adjacent cells are temporarily disturbed and the … Read more
The fungi are classified based on the characteristics of the sexual spores and fruiting bodies present during the sexual stages of their life cycles. Therefore, based on characteristics of their sexual stages and morphology of their asexual spores and thalli they are classified into different groups.
