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Explain the Voges Proskauer (VP) Test?
As it has been discussed in previous exercise, second group of enteric bacteria produces acid during early incubation which rapidly converted to non-acidic components, i.e., 2, 3 butanediol and acetoin (acetylmethylcarbinol). These components can be detected by using Barritt's reagent, which is a mixture of alcoholic alpha-naphthol and 40% potassium hydroxide solution.
Acetylmethylcarbinol is oxidized to a diacetyl compound in presence of the alpha-naphthol catalyst and a guanidine group present in the peptone of MR-VP medium. This results in formation of a pink complex imparting rose red colouration to a medium after 15 minutes. Development of rose red colour indicates positive VP reaction while absence of it is a negative result.
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When the action potential reaches the nerve terminal it causes the let go of a chemical neurotransmitter by the synaptic vesicles. Mammalian nervous system employs many substances
living organisms and their excretory products
Determine the significance of Siphuncle. A cord of tissue that passes between different chambers of a Nautilid shell. Siphuncle regulates the amount of air or fluid in chambers
It is mostly spread by sexual contact, blood transfers and from HIV infected mother to child.
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you are setting up a pcr reaction to amplify a 1000 basepair long dna grament. in your 50 microliter reaction volume you have 100 nanogrM OD RWMPLrw sn QIRH eoufly 50/50 at/gc 100
Q. What is Juvenile Mitral Stenosis ? Peculiar to developing countries is the problem of juvenile mitral stenosis. Patients with rheumatic fever develop tight mitral stenosis i
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