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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.
Dermato phytoses Dermatophytosis (ringworm) is a cosmopolitan, superficial and highly contagious disease of man, animals and birds. The infection is caused by fungi of three g
Describe about the Lysosomes enzymes Within the cytoplasm of the cell, several hydrolytic enzymes (lytic enzymes) capable of hydrolysing proteins, nucleic acids and carbohydra
Bilateral Cleavage In some animals (for example tunicates and nematodes, although in different way), the arrangement of 4 blastomeres after second cleavage is almost radially
Graphs are a way to convey information and trends in a convenient fashion. For this week's Discussion Board you should search the internet for a graph related to biology. Provide u
Nucellus - Seed In a large majority of flowering plants the nucellus is gradually utilized by the endosperm or embryo. In leguminous seeds, for example, the nucellus degenerat
Q. Describe Sensory Receptors? Receptor organs can detect external or internal stimuli. They can be classified according to the stimulus to which they respond: • Photorecep
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Define some Detrimental Effects of Fungi? These cause diseases of animals and humans. These either cause superficial mycoses (infection of skin, hair and nails) or systemic
a) List the a variety of modes of heterotrophic nutrition in plants. b) Define any two modes giving one example of each.
Liver necrosis?
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