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Explain the Indole Production Test?
Many microorganisms produce an enzyme tryptophanase which oxidizes amino acid tryptophan to produce pyruvic acid, indole and ammonia. We can analyze the production of tryptophanase by using SIM agar containing tryptophan. The presence of indole is then detected by adding Kovac's reagent which contains p-dimethyl amino benzaldehyde, butanol and hydrochloric acid. It produces a cherry-red reagent layer with indole (positive test).The role of acidified butyl alcohol is to extract the indole into the reagent layer which then react with dimethyl amino benzaldehyde.
Open Water Zone - Lake Ecosystem This extends beyond the littoral zone and is too deep for light to penetrate till the bottom and for rooted plants to grow. This zone is divid
It is a hemolytic disease, which makes in newborn. Maternal IgG antibodies cross the placenta and destroy the red bleed cells. This develops when an Rh+ expresses an Rh antigen on
Is a peptide bond a covalent or a non-covalent bond? Please explain.
Explain Nutritional Support Management for radiation therapy? For managing these patients on radiation therapy, the following measures can be under taken: 1. Administration
What is a food chain? The food chain is not branched it is linear sequence in which a living being serves as food for another, starting with the producers and going up to the d
Q. Show the Physical criteria of quality for Honey? Colour, crystallization, pH, acidity, water content are some of the criteria used for analysis of honey. These criteria are
What type of larval dispersal does Dreissenids use?
Freezing Point - Properties of Solutions The freezing point of a material is the temperature at which it changes from a liquid to a solid. A liquid freezes when its vapour pre
Is it possible to perform investigation of natural paternity, maternity or brotherhood and sisterhood using the ABO blood typing? By using an ABO blood typing it is possible on
Assuming that variability of populations were non-genetic, that is, not controlled by genetic material, once again chance events alone would determine which of the organisms would
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