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Denitrification - Nutrient Cycles
Nitrates are readily leached from the soil and also lost through denitrification the process by which molecular or gaseous nitrogen (N2) as well as nitrous oxide (NO) 'and nitric oxide (N2O) and nitrogen dioxide (NO2) are formed from NO-3 by bacteria (such as pseudomonas) and fungi. They use the nitrate as a source of oxygen in the presence of glucose and phosphate. Denitrifing bacteria prefer anaerobic or partially aerobic habitats such as estuaries, bogs, lake bottoms and water-logged soils. The bacteria reduce the nitrates to nitrites which are finally converted to free nitrogen.
Define two ways in which genetic recombination occurs during meiosis. Genetic recombination happens during crossing- over and independent assortment.
explain the cell survival curve
Toxoplasma cycles between its rodent and feline hosts, living out different phases of its existence in each. What is the scientific means about the cat and mouse?
Explain about the Probiotics? A mono or mixed culture of living organisms, which when ingested in certain amounts, has a positive impact on host health, beyond conventional nut
Where do the light reactions occur in prokaryotic and eukaryotic cells?
Method for fractionation of subcellular organelles In order to study the composition and the metabolic role of the various subcellular organelles in a cell, it becomes necessar
What is Barfoed's test and its principle? This test is a specific test for monosaccharides. Principle This test is also a copper reduction test but differs from Fehling
Define Stage - Parts of the Microscope? It is a fixed platform positioned about halfway up the arm and provide surface for keeping the slide. Slide is held in position either b
Various ways/techniques suggested for control of water pollution are as follows: 1. Pollutants (radio active, chemical, biological) present in water bodies can be removed by app
Q. Is there chloroplasts in cyanobacteria? In cyanobacteria there is no chloroplast and the chlorophyll layers are dispersed in cytosol.
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