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Q. Explain causes of Shigellosis?
Shigellosis is caused by the genus Shigella and is a common enteric (intestinal) infection. The genus has four serological groups, of which S. sonnei (Subgroup D) and S. flexneri (sub-group B) are the important ones. The Shimellae are non-motile, aerobic and facultative anaerobic, non-sporulating gram-negative rods in the family Enterobacteriaceae. The optimum temperature for the growth is 37°C with a temperature range of 10 to 40°C. They can withstand salt concentrations of up to 6% and are heat-sensitive. They utilize glucose and other carbohydrates and are inhibited by potassium cyanide.
There are several methods by which a disease-causing organism can be transferred from the reservoir to the host organism. Direct contact : Disease - causing organism may be tr
From Molecules to the First Cell The prebiotic conditions on the earth in all probability were volcanic eruptions, lightning and heavy rains. There was no trace of free oxygen
Q Annelid Identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, respiratory system, di
Explain PR Murmur characterstic and graham steel murmur? PR Murmur Characteristic: Blowing, decrescendo murmur heard loudest in 2nd and 3rd left intercostal space with increa
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How are gametes formed in the pteridophyte life cycle, by mitosis or meiosis? What is the type of meiosis that occurs in pteridophytes? In pteridophytes gametes are made by mit
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Explain Differential Media - Culture Media? It allows differentiation among morphologically and biochemically related group of organisms. It contains certain ingredients which
What is the function of glucose-6-phosphatase? a) catalyze removal of one phosphate group from glucose b) catalyze removal of six phosphate groups from glucose c) catalyze the remo
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