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Explain briefly about the selenium Toxicity?
There is a narrow margin between the beneficial and harmful intakes of selenium. The level at which selenosis occurs is not well-defined but threshold for toxicity appears to be 850-900 μg per day. Symptoms of chronic toxicity include brittle hair and nails, skin lesions with secondary infections and garlic odour in the breath. Chronic selenium poisoning in people is characterized primarily by loss of hair and changes in finger nail morphology. In some cases, skin lesions may occur.
Plasmid is the class of the circular, extrachromosomal, autonomously replicating, DNA elements found in number of bacteria. Contain origins of the replication to ensure their main
How does the substrate concentration affect the speed of enzymatic reactions? Initially as substrate concentration increases, the speed of the reaction enhances; this happens b
What does it mean when a plasmid is cleaved with Hind III and Sca I? Does that mean that it opens up at those two locations and I have to insert whatever is complementary to it?
Accumulation of phenylalanine and its catabolic products leads to central nervous system damage. The extent of damage caused to the brain depends on the time at which the insult oc
Extra-Embryonic Membranes and Placenta The extra embryonic membranes like you already know provide nourishment and protection. These membranes are fundamentally similar to th
Ears We have a pair of ears. Each ear has three parts - external, middle and inner ear. The function of the middle ear is transmission of sound waves from external to inner ear
what process provides the energy for muscle contraction?
Cells are classified into eukaryotic or prokaryotic. Prokaryotic cell is that with no a delimited nucleus. Eukaryotic cells are those with nucleus delimited by membrane.
How are mineral salts, water and food (sugar) transported throughout the plant? Mineral salts, Water and sugar are transported throughout the plant through conductive vessels f
Define Efficiency - terminologies used in chromatography? Efficiency in chromatography is expressed as number of theoretical plates. H = L/N Where, H is heigh
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