Koch’s postulates and its limitations
Koch’s postulate forms the very basis of the pathogenic microbiology. The causality of almost all infectious diseases is based on the postulate and theories developed by Robert Koch, who is … Read more
Microbiology is the branch of science that deals with microscopic organisms and their interaction with other microscopic and macroscopic organisms.
Koch’s postulate forms the very basis of the pathogenic microbiology. The causality of almost all infectious diseases is based on the postulate and theories developed by Robert Koch, who is … Read more
Biochemical reactions are significant in the identification of bacterial isolates and in the identification of different bacterial species. These tests depend on the presence of certain enzymes, such as catalase, … Read more
Actinomycetes are classified as a group of gram-positive bacteria that are unique for their spore forming abilities and formation of mycelia structures. They show marked chemical and morphological diversity but … Read more
Some of the differences between bacteria and virus are as follows: S.N. Character Bacteria Virus 1. Cell type Prokaryotic cells Acellular 2. Number of cells Single-celled No cell 3. Size … Read more
The most probable number (MPN) analysis is a statistical method based on the random dispersion of microorganisms per volume in a given sample. In this method, measured volumes of water … Read more
Biosafety Cabinets Definition Biosafety Cabinets (BSCs) are enclosed workspaces with a ventilated hood that is designed to contain pathogenic microorganisms during microbiological processes. The primary purpose of biosafety cabinets is … Read more
A Laminar flow hood/cabinet is an enclosed workstation that is used to create a contamination-free work environment through filters to capture all the particles entering the cabinet. These cabinets are … Read more
The Membrane Filter (MF) Technique was introduced in the late 1950s as an alternative to the Most Probable Number (MPN) procedure for microbiological analysis of water samples. It involves the … Read more
As the Broth dilution method are time-consuming, many laboratories in the United States adopted disc diffusion tests in the early 1950s. Kirby Bauer tests also known as the Disc diffusion … Read more
β-lactamase enzymes are capable of hydrolysing the β-lactam rings (the active site) of β-lactam antibiotics; thereby deactivating their antibacterial properties. It is observed in both gram-positive and gram-negative bacteria. They … Read more