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EtiologyThe infectious agent of psittacosis - lymphogranuloma venerum trachoma group (PLVG) is an obligate intracellular parasite and is classified as separate genera with only 2 species, viz. Chlamydia trachomatis and Chlamydia psittacii. These organisms are the members of an exclusive order Chlamydiales under the family Chlamydiaceae. The organism resembles bacteria in the composition of the cell wall, as it possesses both RNA and DNA and also multiply by binary fission. However, unlike bacteria, this multiplication occurs only within the host cells. In this respect, like viruses the organism is intracellular and can only be propagated or multiply in living cells. The elementary bodies of chlamydia stain with basic dyes and are visible as small, round red coloured dots with the light microscope when stained by the methods of Machiavello or Gimenez or modified acid-fast techniques. Their colour is purple blue in Giemenez stained preparations and appear Gram negative in Gram’s stained preparations.
CHROMOLIPID Formed by lipid & pigment, eg. carotene, xanthophylls. Lycopene present in tomato & red chilli. Carrot is rich in b-carotene, converted into vitamin A.
Thermodynamics Thermodynamics tells us that every transformation of matter chemical transformation is accompanied with energy conversion .For example when complex molecul
THEORY OF ORGANIC EVOLUTION - LAMARCKISM Theory of the inheritance of acquired characters or Lamarckism put forwarded by Jean Baptist de Lamarck (1809) in his book "
Define Developing a strategy for improvement in the rural economy? It is necessary to develop a strategy that results in improvement in the rural economy. This could be achieve
What is Class Chondrichthyes? Class Chondrichthyes takes its name from two Greek words. "Chondros"; means cartilage, and "ichthys"; refers to fish, therefore the name "cartilag
Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? The Mendel's second law, or the law of the independent assortment, is valid fo
Energy Energy: Fever is characterized by elevation of BMR, thus caloric requirements are increased.. The increase in caloric needs is dependent on severity of infection
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#question.characteristics of coelenterata?.
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