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Define the Absorption of Vitamin A?
Vitamin A and carotenoid tend to aggregate with lipids into globules, which then pass into the small intestine. Dietary vitamin A (retinol) is absorbed as such in the intestines. Retinyl esters (mainly palmitate) arc hydrolyzed by the combined action bile salts and the esterases in the small intestine. The released carotenoids and retino1 in the small intestine are solubilised into micelles i.e., small aggregates of mixed lipids and bile salts suspended within the gastric bolus (material taken into the body by way of. The digestive tract)solution. The micelles are absorbed into the intestinal mucosal cell. Approximately 70 to 90% of retinol from the diet is absorbed as long as the diet is adequate in fat. Carotenoid absorption from the diet ranges from about 20% to 50%, but carotenoid absorption may be as low as 5%.
What are the typical vegetation and the typical fauna of the taigas? Taiga, or the boreal forest, is characterized by coniferous trees, pine forests. There are also mosses, lic
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Diversity is defined as the no of species present in a community termed as "species richness". We can represent species biodiversity at different geographical scales as alpha, beta
identifying characters of pennetula
What is the effect of increased temperature on a non enzyme catalyzed reaction? What are the effects of increased temperature on an enzyme catalyzed reaction?
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Why does the ingestion of vegetable fibers improve the bowel habit in people that suffer from hard stools? Some types of plant fibers are not absorbed by the intestine but play
Hydropericardium syndrome Hydropericardium syndrome (HPS), known as Leechi disease, is caused by Avian Adenovirus 4. HPS has been responsible for high mortality ranging from 6
A friend of yours suggests that the origin of life on earth is extraterrestrial in origin (an idea known as panspermia). Can you propose a testable hypothesis to determine if this
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