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Explain Gelatin - Tests for Presence of Exoenzymatic Activity?
Gelatin is an incomplete protein as it lacks amino acid tryptophan. It is a major component of connective tissue and tendons in humans and other animals. Many microorganisms produce an enzyme gelatinase, which result in its hydrolysis. Gelatin deep tubes (Nutrient broth supplemented with 12% gelatin) are used to demonstrate the hydrolytic activity of gelatinase. Gelatin is solid at temperature less than 25°C and liquid at temperature above 25°C. Gelatinase degrades gelatin to produce amino acids and liquefies gelatin. Once this degradation occurs, gel characteristic is not restored even at 4°C. Following inoculation and incubation for 48 hours, if the culture remains liquid, it indicates fast gelatin hydrolysis. If it gets solidified, further incubate for 5 days. If it remain liquefy on refrigeration for 30 minutes, it indicates slow gelatin hydrolysis.
Categories of alloplastic implant materials The entire groups of possible alloplastic implant materials, regardless of their clinical applications fall into the following categ
From an ecological point of view, species richness alone has limited value. More meaningful measures use the number of different species in a given area (species richness) as well
Explain biomaterial implantation When a biomaterial is introduced into the host, in addition to a host response there is also a material response. Immediately on implantation,
During the life cycle of most animals, some diploid cells undergo meiosis and haploid form in a process called gametogenesis. Spermatogenesis: In the testes of the male, the
How do adhesion and cohesion help plants move materials?
Q. (a) In droplet infection (i) where do the droplets come from, (ii) what infective agents might they contain? (b) Give two examples of diseases normally spread
Q. Since the visual images are projected in an inverted manner on the retina why don't we see things upside down? Since the crystalline lens is a convex spherical lens it forms
In unilocular ovary with a single ovule the placentation is : 1. Marginal 2. Basal 3. Free Central 4. Axile Basal
A molecule that acts by transferring a phosphate group from an ATP molecule to another molecule would be called: A) hydrolase. B) lipase. C) transferase. D) ligase. E) kinase.
Membrane Perforation of sinus graft surgery it is the most common complication during the sinus graft surgery resulting from the scoring of lateral access window for surgery an
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