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Explain Transport and Utilization of Vitamin A?
The efficacy of the intestines to facilitate absorption and utilization of retinoid s and carotenoids depends upon the cellular uptake of these compounds into the intestinal mucosal cell, bioavailability or passage of the molecules beyond the intestinal mucosa into the body with the potential for storage or use in tissues and bioconversion i.e., production of active retinoid from provitmin A carotenoids. Inside the intestinal cells, ß-carotene is cleaved by a cytosolic enzyme 15-15' oxygenase to form retinaldehyde, which is then reduced by the microtonal enzyme retinal reductase to retinal. Thus, the ultimate product formed in the intestines is retinol, which is then re-esterifies with long chain fatty acids by intra cellular retinol-binding proteins (CRBP) and packed into chylomicron containing cholesterol esters, phospholipids, triacylglycerol etc. What happens to this chylomicrons.
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wine turns sour beause of the action of which bacteria? aerobic or anerobic?
Q. Where can RNA are found within cells? In the eukaryote cell nucleus the RNA can be found to dispersed in the nuclear fluid, along with the DNA, and as the main constituent o
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Plants use proteins, lipids and starch as seed storage compounds. What is an advantage of using proteins as a storage compound that are not afforded by lipids or starch?
Explain Glucocorticoids The adrenal cortex secretes the glucocorticoids which increase gluconeogenesis by increasing hepatic intake of amino acids accompanied by increased ac
The type of gene interaction in which effects of one gene override or mask the effects of other entirely different genes is known as: a) Mutation b) Linkage c) Pleitropy
Group specificity Some enzymes prefer a specific functional group to be present\%on the substrate molecules. Example:- alcohol dehydrogenase acts on alcohols having -OH gr
ATP-sensitive potassium channel? A. In smooth muscle cells surrounding an arteriole serving a region of the body that has just recently had very high levels of cellular acti
bone modeling may occur?
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