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Explain the Escherichia - Characteristics of Bacteria?
It belongs to order Enterobacteriales. It is the best-studied organism present in the colon of humans and other warm-blooded animals. It is commonly employed in research and used as indicator in analysis of water and food for faecal contamination.
Escherichia is gram negative, non-sporulating straight rod, if motile peritrichously flagellated. These are facultative anaerobes, oxidase negative and have simple nutritional requirement. These carry out mixed acid fermentation. Escherichia sp. may play a nutritional role in intestine by synthesizing vitamins and also help in making large intestine anoxic. Usually Escherichia is not pathogenic, but some Escherichia sp. cause gastroenteritis, urinary tract diseases and also serious food borne diseases. Do you recall reading about E. coli O157:H7? This can cause serious form of illness.
indicator for testing for the presence of sugar
Modalities Available for Sterilization The most accepted methods of sterilization can be classified as follows: Physical Agents: These comprise of: Sunlight Drying
Q. Moniliasis is one of the most common opportunistic diseases in AIDS. What is the etiological agent of moniliasis and what is the other name of the disease? Why is monilia also c
Explain about the Protein-Energy Ratio (NDP Cal%)? Platt and his colleagues (1961) are largely responsible for the introduction of the ratio of protein energy to total energy (
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Vegetative Development - Growth It is quantitative and irreversible change. It reflects an increase in size and volume of an organism. For example, the change in the size of a
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
Explain Esterification The process of converting an acid into an alkyl or aryl derivative. Most frequently the process consists of the reaction of an acid with an alcohol in th
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Q. What are the main prophylactic measures against hookworm disease? The major prophylactic measures against hookworm disease are to avoid walking barefoot on soils suspected o
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