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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.
Class of Subphylum Uniramia - Chilopoda Chilopoda have the centipedes. The class contains some 2500 species that have been described so far. They inhabit both of the tropical
EXCRETION IN PRAWN- A pair of antennary gland or green gland and a median renal sac present. Green glands lie at the base of antennae & open out by renal aperture.
plese help for an assignment of topic parasitic flat worms for a first year zoology student.
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Radiographic Evaluation - criteria for endosteal implants Surgical and interventional imaging involves imaging the patient during and immediately after surgery and during the
compare the lengths and paths of the uterine tubes (oviducts) of the cat and the human
In a follow up to Alfred Sturtevant's studies on recombination in the fruit fly, Seymour Benzer used complementation studies of bacteriophage mutants to verify where recombination
Q. Whcih group of individual animals and plants called Species? A group of individual plants and animals that are fundamentally alike is treated as a ,species. Species is a par
Mechanisms for Response – Protozoan Protozoa are sensitive to many kinds of stimuli like touch, temperature changes, light, chemicals, etc. It is not clear how they do so but
BASICS OF ENVIRONMENT We live in two world one is natural world of animals, plants, air, water and soil that was present since the evolution of earth. The other world is of soc
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