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Explain E. coli - Microbiological Study of Water?
It is always present in human intestine so its presence indicates the faecal pollution and possible presence of other human or animal intestinal pathogens. Other indicator microorganisms include total coliforms, faecal streptococci, faecal enterococci etc. Faecal enterococci are increasingly being used as an indicator of faecal contamination in brackish and marine water because of slower death rate.
1. Many bacterial genes show adaptive regulation of their transcription. a) How is the lac operon regulated by the sigma factor? b) How is the lac operon regulated by lactose
What is the life cycle of Trypanosoma cruzi? Trypanosoma cruzi is a heteroxenous parasite, i.e., it has an intermediate host, the triatomine bug, and an ultimate host, the hum
what is cell?
Minerals :-Nickel Food Source Plant foods Nutritional Functional role Essential nutrient: Deficiency in humans unknown. Catalyst: hydrogenation in
What are the main biological functions of water? Water is the basic solvent for chemical reactions of living beings; it is the major means of substance transportation in the ce
Suppose you were presented with two 40X lenses to use on your microscope, lens A had a numerical aperture of 0.56 and lens B had a numerical aperture of 0.75. Which is best and why
Give three examples of human disorders which are caused by the action of a single pair of alleles. In every case say whether the harmful allele is dominant or recessive to the non-
The northern most biome on our planet is the arctic tundra. It is a treeless wet circumpolar band between the polar ice caps and the forests to the south. The predominant plants
Q. What are the modes of transmission, main signs and symptoms and treatments of hepatitis A? The Hepatitis A is an acute disease of low mortality caused by the hepatitis A vir
SIMPLE LIPIDS They are lipids formed of fatty acids and alcohol without any additional group. e.g. fats or true fats,wax,cutin, suberin. Simple lipids are mainly of 2 types
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