mitosis

Mitosis

Mitosis Introduction When cells divide, the chromosomes must also make copies of themselves (replicate) to maintain the appropriate chromosome number in the cells. In eukaryotes, the chromosomes replicate in two main types of nuclear divisions, called mitosis and meiosis. These two types of divisions are quite different and have different functions, some of the molecular …

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Recent trends in microbial taxonomy2

Recent trends in microbial taxonomy

Recent trends in microbial taxonomy Recent trends in microbial taxonomy includes:- Chemotaxonomy Molecular method Numerical taxonomy Genetic method Serological method Taxonomy based on ecology Chemotaxonomy chemotaxonomy is the classification of bacteria based on chemical composition of cells and fermentation product which is analyzed by the various method or techniques like chromatography, electrophoresis. Major chemical compounds …

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bt cotton

Bt Cotton

Bt Cotton Introduction A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques. The first genetically modified mouse was created in 1974 by Rudolf Jaenisch and the first plant was produced in 1983. Bt cotton is a genetically modified variety of cotton that produce an insecticide. Bacillus …

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prebiotics

Prebiotics

Prebiotics Prebiotics are non-digestible food ingredients that beneficially affect the host by selectively stimulating the growth and activity of the micro-flora. They were first identified and named by Marcel Roberfroid in 1995. Prebiotics are heat resistant, which keep them intact during the baking process and allow them to be incorporated into every day food. By consuming a …

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agarose-gel-electrophoresis

AGAROSE GEL ELECTROPHORESIS

AGAROSE GEL ELECTROPHORESIS INTRODUCTION Agarose gel electrophoresis is a method to separate DNA, or RNA molecules by size. This is achieved by moving negatively charged nucleic acid molecules through an agarose matrix with an electric field (electrophoresis). Shorter molecules move faster and migrate farther than longer ones . PRINCIPLE The basic principle of separation for all electrophoresis is the movement …

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Mechanism of Drug action

Mechanism of drug action (antibacterial, antifungal, antiprotozoans)

Mechanism of drug action (antibacterial, antifungal, antiprotozoans) INTRODUCTION  Antimicrobial agents An antimicrobial is naturally occurring microbial products that kills or inhibits the growth of microorganisms. The microbial agent may be a chemical compounds and physical agents. These agents interfere with the growth and reproduction of causative organisms like bacteria, fungi, parasites, virus etc. Ideal characteristics …

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