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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.
Mitral Valve Replacement : When mitral valve replacement for a calcified, stenotic valve is done, usually it is a classical procedure removing leaflets, their chordae an
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FUNCTION S OF PROTEIN Proteins from the colloidal complex of the protoplasm and its organelles. Most Abundant Protein in Organic World is RUBISCO or Ribulose biphosp
Name three effects that inbreeding can have on a population. Inbreeding can decrease the number of offspring produced, increase susceptibility to disease, reduce genetic varia
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Some animals, such as cows, normally make only one offspring from each mating. If a cow showed a dominant phenotype, why would a typical testcross be a complex way to verify the ge
The ph of urine can be quite variable. Why? Why is bromothymol blue used as a ph indicator instead of phenal red when titrating blood?
In most axons, myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are known as: a) Collaterals b) Nodes of Ranvier (pron: ron-vee-ay)
Q. Do sponges have circulatory, nervous and excretory systems? Sponges do not have a nervous system neither excretory system nor circulatory system.
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