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Explain the Sub-Culturing?
Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of these pure cultures in laboratory is must. Preparation and maintenance of these pure cultures can be achieved by transfer of culture from one medium to another or from their parent growth source to another. The procedure is called sub-culturing. This technique is of basic importance and should be carried out by practicing aseptic technique. The term picking off is used when transfer is made from solid to liquid media.
How different are the actions of antibodies against bacteria and against virus? Why is the cellular immune response activated in case of chronic viral infection? The antibodies
Explain Basic Stains (Cationic) - Types of Stains? These are chloride or sulfate salts of coloured bases which on ionization give positively charged chromogen. As such, these h
Exploitation of Forests Exploitation of our forests for commercial purposes and for food and fodder cannot be stopped completely because of symbiotic relationship between fore
To "express" a gene is to make it to function properly. A gene which encodes a protein will, when expressed, be transcribed or translated to produce that particular protein. A gene
Causes of Air Pollution We known about the composition of atmosphere, its major and minor constituents. The composition of atmosphere has remained the same for thousands of y
Glycogen is a multibranched polysaccharide which serves as a part of energy storage in fungi and animals. In humans the glycogen is recognized and stored primarily in the cells of
Q. In which kind of animals does the placenta exist? What is its major function? True placenta is present in placental mammals. The placenta is formed from the chorion of th
Producers - Biotic Components Producers also called autotrophs are largely green plants that can make food from simple inorganic materials. Food refers to complex organic comp
Q. Why is a leguminous crop rotation used in agriculture? The Leguminous crop rotation and other crop rotations are used in agriculture for the reason that in these plants many
What is the Importance of vitamin b2 As a prosthetic group of the flavin enzymes, vitamin B 2 is involved in the reactions of almost all nutrients of plants and animals. They
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