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Explain Negative Staining Technique?
Here, a stain has a negatively charged chromophore that is repelled by the negative bacterial surface. It results in indirect staining of microbial cell. It appears as clear area surrounded by coloured background. It is used for visualizing many cell structures like capsule. Negative stains also work better under neutral or alkaline conditions. Microorganisms can also be stained either by simple staining or differential staining.
Explain brefiely the chemical equations? Chemical Equations : A chemical equation is a shorthand way of describing a chemical reaction. For example, in the formation of wate
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionixed: negative on one end, positive on the other. The helical molecule acts like a spring and compres
Hepatitis B Vaccination against hepatitis B (Engerix-B - GlaxoSmithKline; Recombivax HB - Merck) is now a routine pediatric immunization in the US. It is recommended for previo
Explain the Main Benefits of Canned Foods? The main benefits of canned foods are: (a) They are safe and hygienic and have logically good nutritional value; (b) They are e
what is the role of cholesterol in membrane fluidity?
Infectious proteins are present in: 1.Gemini viruses 2.Prions 3.Viroids 4.Satellite viruses Prions
Seed Coat Effects In some seeds dormancy is imposed by the presence of the seed coat; if this is removed, the seed germinates. Two possible types of mechanisms could be invol
Acute Complications of PTCA : The incidence of complications after PTCA that require emergency surgery has reduced considerably in the present era. Introduction of stents, pe
Which of the following could potentially be a free radical? Answer oxygen (atomic number 8) helium (atomic number 2) neon (atomic number 10)
DNA can be divide into fragments using restriction enzymes. (a) Outline the technique used to separate these fragments. (b) What property of the DNA f
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