Supriya N

Bacteriophage

A Bacteriophage possesses viral proteins, which can disrupt their host cell, i.e. Bacteria. It first attaches to the susceptible bacterial cell and injects its genetic material into the host cell. The viral genome within the host cell takes over the cell machinery and uses the bacterial components to release viral proteins. Eventually, the viral proteins …

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Rhizosphere

The rhizosphere is a term, which was first introduced by a scientist L.Hiltner. It is the region that is a few distances (2-80mm) extended from the root system. It can also define as a zone, which favours the physical and chemical activity of the microorganisms and responsible for the intense microbial activity. The rate of …

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Cyanobacteria

Definition: Cyanobacteria represents the major group of photosynthetic bacteria, which can carry out the oxygenic photosynthesis. It releases oxygen and uses water as an electron-donating substrate, i.e. splits water molecule to release oxygen. Other than this, they are also capable of fixing nitrogen. Classification of Cyanobacteria Kingdom: Monera Division: Eubacteria Class: Cyanobacteria Examples: Nostoc sp., …

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Spoilage of Milk

Definition: Any undesirable change or deterioration in the quality of milk is called Spoilage of milk. These changes can be like an unpleasant appearance, colour, odour, taste etc. Milk contains a complex biochemical composition and a high water activity, due to which it provides an excellent culture medium for the growth and multiplication of microorganisms …

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Difference Between Antigen and Antibody

The difference between antigen and antibody is mainly due to the following factors like functional role, specificity factor and foreignness. Functional role: Antigen incites the immune system, whereas the antibody is produced in response to a specific antigen. Specificity factor: Both antigen and antibody are specific. The specificity of antigen is due to the presence …

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Staining

Definition: Staining is a method of imparting colour to cells, tissues or microscopic components, so they are highlighted and visualized better under a microscope. There are a variety of staining methods like simple, differential and special staining, which are used for various purposes ranging from the study of microscopic organisms to cellular structures, metabolic processes, …

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