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Explain Theory or Principle of Determination of Coliforms?
Coliforms are gram negative, non-spore forming, facultative anaerobic bacteria which produce acid and gas on lactose fermentation at 37°C within 48 hours. It includes E. coli, Klebsiella and Enterobacter and are used as indicator of fecal contamination. Though coliforms commonly inhabit the intestinal tract, their presence on food may be because of non-feacal origin. Therefore, the results of coliform counts should be cautiously interpreted.
Physical map is the map of locations of the identifiable landmarks on DNA (for example restriction of the enzyme cutting sites, genes), regardless of their inheritance. Distance i
What are biotic factors? Biotic factors are living beings (plants, microorganisms and animals) that are part of a given environment.
trematodes parasitic mode of feeding
Define the Nutritional Needs of Microorganisms? About 95% of dry cell weight of microorganisms is constituted by macro elements. These are carbon (C), nitrogen (N), oxygen (O),
how mollusca bore into hard substrate
Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? A. Action potentials in sympathetic neurons that release
what is the pH inside the stomach?Why is there a need to keep that pH level? How is it maintained?
Radial Artery (RA) : Patency of RA is less than that of Ih4.A but much superior to a venous graft. One of the studies showed 90 per cent patency at 13 months and 83
Define Factors Which May Lead To Errors in Count? There are many factors, which may lead to errors in count. (i) Counts may be low if the agar medium used in the technique d
Sour taste is usually due to the presence of acids such as acetic acid, citric acid, benzoic acid. Upon dissociation, the acids give H ions which impart acidity. More the H ion con
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