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Define Chromium Toxicity?
Trivalent chromium, the form of chromium found in foods and supplements, is least toxic. Oral supplements upto 800 to 1000 mcg per day appear to be safe. However, hexavalent chromium often found in paints, welding fumes and other industrial settings is very toxic. Inhalation of Cr6+ may result in respiratory disease while direct contact results in dermatitis and skin ulceration. Liver damage can also occur.
Determine the groups of soil organisms The soil organisms are classified into two broad groups viz. soil flora (related to plants) and soil fauna (related to animals) which ar
Explain biomaterial implantation When a biomaterial is introduced into the host, in addition to a host response there is also a material response. Immediately on implantation,
Must account for both food AND light as zeitgebers Because of the continuous light / dark periods of the year; light not always able to act as a zeitgeber. Food
MUTATION THEORY (Hugo de Vries 1901) - New species are not formed by continuous variations but sudden appearance of variations i.e., mutation. Mutation are heritable and per
Q. Collection of plant specimens? Collection of plant specimens is essential for taxonomic research. These circumscribe species and document their variability. Plant material i
Q. Show the Inventory of the plants? A flora provides an inventory of the plants of an area and is often restricted to the vascular plants. Floras contain description of plants
Earthquakes Can Be classified into different categories on the basis of region where it occurs and the geological make-up of that region as : (i) Tectonic earthquake: most
Explain the Principle or Theory of biuret method? If a strongly alkaline solution of Biuret is heated with very dilute copper sulphate, a violet colour is obtained. The substan
Define the term - Acoelomate Triploblastic animals which do not have an internal body cavity. This includes flatworms and ribbon worms. However the term could be applied to oth
What is the type of circulatory system present in arthropods? Do these animals have heart and respiratory pigments? In arthropods the respiratory system is open (lacunar). Blo
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