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Amoeba: Entamoeba histolytica, a protozoan,is the cause of amoebiasis, which is very common in a tropical country like India. Entamoeba Histolytica is transmitted at 60°C through infected cyst. It remains viable only in moist form and gets destroyed at 60°C and at freezing conditions beyond 24 hours.
The foods like vegetables from fields irrigated with sewage polluted water are the vehicles of transmission. They get contaminated with amoebic cysts through polluted water and infected handlers. Viable cysts have been found on the hands and under the finger nails of the carriers. The common pests like flies, cockroaches and rodents may also harbour the cysts and contaminate food and drinks. The symptoms of diarrhea occur from several days to 4 weeks after ingestion of the contaminated
food. The prevention of amoebiasis is by using food procured from reliable sources, preparing food in potable water and adequate cooking and proper storage after preparation. Use of filtered / boiled water, disinfection of uncooked vegetables with * an aqueous solution of iodine around 200 ppm or acetic acid (5-10%) or full strength vinegar are the recommended measures to minimize the problem.
55yrs old woman had burns and has lost 6% body fluid.She weighs 50Kg.How much fluid does she need to replace the lost fluid.
Human Impact on the Phosphorus Cycle Like other biogeochemical cycles, human activities have altered the phosphorus cycle. Human beings mine phosphate rocks and guano deposits
It arises from a one embryonic cell known as neuroblast Types of neuron: According to number of process¬ (a) Unipolar: Only axon is there. e.g. mesencephalic nucleus. (b)
Essential Concepts of Endosseous healing 1) Osteoblast is the prime bone matrix synthesizing cell. Like most secretory cells, osteoblasts are polarized cells, and the direction
Applications in Horticulture and Agriculture While going round in public parks, you might have observed plants trimmed in such a way giving appearances of animals like camel,
What are the valves of the venous system? What is their function? The valves of the venous system are structures within the veins that permit blood to flow only in the normal w
Ehrlichiosis The disease is caused by a rickettisia, called Ehrlichia canis. Dogs and man are the reservoir hosts. The infection is transmitted through bite of infected tick, Rhip
Sporophytic Incompatibility The recognition and rejection reactions in a SSI system occur on the stigma surface, placing barriers for pollen germination or penetration of poll
SEXUA L REPRODUCTION 1 . Amphigony - Zygote is formed. (i) Syngamy Fusion of gametes. (a) Endogamy - It involves self fertilisation. e.g.
what are structural adaptation of flatworm to it''s enviroment /
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