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Explain the Storage of vitamin A?
The primary organ for storage of vitamin A is the liver. Reserves are found in the stellate cells, as mentioned above. The average liver weighs 1.5 kg and when replete, contains 450 mg of vitamin A stores. Hepatic tissue concentrations of < 30 mcg /g is considered marginal. Total body stores of vitamin A range from 300-900 mg with 20% found in peripheral organs and tissues. So far we have discussed about the absorption, transport, storage of vitamin A. It was mentioned in the text above that the bioavailability of vitamin A is a determinant of its absorption and hence excretion. Let us now understand the key aspects related to the bioavailability of vitamin A.
Q. How are animals classified according to the germ layers present in their embryonic development? Cnidarians are diploblastic, that is they present only ectoderm and endoderm.
Preventive steps for global warming : Growing trees in vacant places. Growing social forests and protect them. Promoting abundant growth of phytoplankton plant species in marine
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Is there a respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida have the respiratory pigment hemoglobin (the similar found in chordates) and oth
1. Carbon monoxide (CO): It is colourless, odourless, tasteless gas and is not soluble in water. Source: CO is produced due to: (i) Incomplete combustion of fuels
Noncompetitive inhibition In this type of inhibition, the inhibitor binds at a site on the enzyme other than catalytic site. As there is no competition between the s
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Within a week after initiation of effective antimicrobial therapy, almost 75 per cent of patients with IE, including those with PVE, are afebrile and 90 per cent have defervesced b
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