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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.
Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.
Terrestrial and Aquatic Ecosystem What is common between a terrestrial and an aquatic ecosystem. Both have similar type of trophic structure. They possess an autotrophic layer
Echinococcosis (hydatidosis) Echinococcosis, also called hydatidosis, is a global problem particularly in countries where sheep and cattle raising forms the major animal husba
Explain the term- Horizons These processes take a long time- may be a few thousand years to create a soil. As the time passes, the soil matures and generally becomes deeper and
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Q. Role of Exercise and Drugs in management of diabetes? Aerobic exercise for at least 20-30 minutes four or more times a week is recommended. Exercise after meals is preferre
Iron deficiency should be treated with supplemental iron. • Osteoporosis should be treated with calcium and vitamin D supplements. • Depending on individual factors, patien
Explain Requirements for Simple Staining of Bacterial Cultures Culture: 24 hours bacterial culture of E. coli and Bacillus on nutrient agar or in broth. Reagents: Methylene
Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? A. Action potentials in diaphragm skeletal muscle fibers
Define Regulation of intracellular Ca concentration? The cytoplasmic calcium concentration is regulated by a series of calcium pumps, which either concentrate calcium ions with
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