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Give one example in each case of the usefulness of bacteria in (a) a natural environment,
(b) an industrial process.
(a) In a natural environment bacteria bring about decay. In this way they stop accumulation of dead material and make available necessary compounds such as nitrates.
(b) Bacteria are used in industrial processes to make certain kinds of food (e.g. cheese, yoghurt), to make single-cell protein, to purify sewage and in the manufacture of certain chemicals (eg lactic acid).
Adaptation Closely related to irritability is the capacity of living things for adaptation. You might have noticed that whenever you go outside in the bright sun after having
Explain Observation or Inference required for osazone test? 1. Crystals of different shapes will be seen. Glucose and fructose give needle shaped crystals and galactose gives f
What are examples of nematodes? Ascaris, hookworm and filaria, all parasites of humans, are instance of nematodes (also called as roundworms).
Freeze Fracture Electron Microscopy Freeze fracture electron microscopy i a technique lo reveal the surface features of hydrophobic interior of cell membrane. In this technique,
Q. Is there an exchange of cells between the mother and the fetus through the placenta? Under usual conditions there is no passage of cells across the placenta during gestation
Feline panleukopenia It is arguably the most important of all feline viral diseases and all members of the family Felidae are susceptible. This disease is commonly found in kitten
Discuss about electric field The electric field is a vector quantity whose magnitude is the force per unit charge and points in the direction of the force on the positive test
What is Community Ecology explain their characterstics? Community Ecology: In ecological terms, a community consists of an assemblage of all of the populations living and int
Q. How DNA-RNA hybridization occurs Both DNA and RNA are able to form hybrids in solution with other RNA or DNA molecules which have complementary base pairing. Double-stranded
Determine the term - neuropsychological screening examination A neuropsychological screening examination is a considerably abbreviated version of a full neuropsychological ass
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