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Explain the Decolourizing Agent - Ziehl-Neelsen Method?
Acid alcohol - a mixture of 95% ethanol and 3% HCI - is used for decolourization. Before decolourization, smear is allowed to cool to make waxy substances hardened. As primary stain is more soluble in cellular waxes than in decolourizing solution, acid-fast bacteria retain the primary stain. However, all non-acid fast bacteria loose primary stain because of the lack of cellular waxes.
Which of the following is a false statement regarding the method of recombination or crossing-over? A. Crossing-over takes place during prophase I of meiosis B. Recombinatio
Nitrogen Fixation As we have said before, atmospheric nitrogen cannot be used by plants or animals. It has to be first fixed. The term nitrogen fixation refers to the oxidatio
Q. What are the kinds of fecundation that occur in arthropods? What is the predominant kind? In arthropods there are species having exterior fecundation and other species havin
Right-handed adult patient X with a complete transection of the corpus callosum is presented with a simple written question in X's right visual field. A barrier is positioned so th
Explain factors influencing rs content of foods? 1) Presence of sugar and lipids: Studies so far show that presence or addition of lipids and sugar reduces RS content. 2) Ca
Diet : Pre-operatively, patients are on low calorie, low fat diet. However in the immediate post-operative period, strict dieting is not advisable. They need good nutrition for p
In the Miller-Urey experiment, amino acids of bothe the L and D enantionmers. Why is it that the L enantionmer is more dominant in living things?
Reduction of NADP+ occurs during what?
In a numeric pyramid is it possible for the base to be smaller than the other levels? Ever since the numeric pyramid represents the quantity of individuals in each trophic leve
how many chromosomes in human
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