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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.
Explain about the Tray and Tunnel Dryers? Tray and tunnel dryers are widely used in the food industry. In both cases the material being dried is supported on multiple trays, wi
how oviary work
a) What is biological magnification? b) Describe how DDT as a water pollutant undergoes biological magnification?
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Explain the Composition of Blood Agar? Infusion from beef heart - 500 gm Tryptose - 10.0 gm Sodium Chloride - 5.0 gm Agar - 15 gm Distilled water - 1000 ml pH
Dendritic Cells a. Are the same as macrophages b. Bind and digest pathogen proteins c. Secrete immunoglobulin d. All of the above
Bronchiectasis: Bronchiectasis literally means abnormal dilation of bronchi. It is a chronic inflammatory condition which is characterised by permanent dilation of bronchi a
Describe Splitting sequence of S 2 ? Even though the pulmonary valve closes at about 20 mm Hg and aortic valve at 100 mm Hg, the aortic closure occurs first as the impendence
Explain the Maintenance Requirement of nutritional needs? This is defined as 'the amount of nutrient that is needed to replace the wear and tear of the tissues within the body
Define Most Probable Number Test (Multiple Tube Fermentation Test)? Presence of coliforms in the water sample can be detected by performing multiple tube fermentation test whic
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