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Define Absorption, Storage and Elimination of ascorbic acid?
Ascorbic acid is rapidly absorbed from the intestines primarily by active transport. Simple diffusion or carrier-mediated transport may also contribute to a small extent of uptake of the vitamin from the mouth and stomach. Prior to absorption, ascorbate may be oxidized to form dehydroascorbate which is absorbed by passive diffusion or by use of glucose transporters. It passes through the portal vein to the general circulation and to all tissues. Each organ or tissue has an optimal saturation level of ascorbic acid. It is not stored to any appreciable extent in the body. The degree of absorption decreases with increased vitamin intake and varies from 16% to 98%, the average overall absorption being about 80% to 95%. Unabsorbed vitamin C may be metabolized by the intestinal flora. Pectin and zinc are a few substances that impair its absorption. Excess is excreted in urine.
Types of Ecosystem Basically ecosystems are of two types : terrestrial and aquatic. If you travel from plains to the mountains in the Himalayas, you notice significant changes
The nitrogenase complex is extremely sensitive to inactivation by O2, so the enzyme must be protected from this reactive substance. During the root nodules of legumi
Determine the Parts of sphygmomanometer Parts of sphygmomanometer consists of: - an inflatable cuff (wrapped around the arm when checking B.P) at vertical height as the hear
Ask questiImagine you are studying a group of amphibian species that vary in their habitats-some living in dense, murky water, and others living in very clear ponds. What kind of c
Q. Illustrate about Components of an Angioplasty System? 1) Guiding catheter: The ideal guiding catheter must have a lumen diameter i.e. at least twice that of the diagnostic c
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GER M LAYER THEORY - Proposed by Pander, studied chick embryo development. Coined the term ectoderm, mesoderm & endoderm.
VITAMIN - C Also known as ascorbic acid / anti viral vitamin / anti cancer vitamin / anti rabies vitamin / anti scurvy vitamin. It is the earliest known vitamin. It
Questiion 1 List various methods used for hemoglobin estimation of donor. Add a note on specific gravity method Question 2 Why is it important to follow safety measures
Explain Ventricular septal defects VSD Chsude Technique ? Ventricular septal defects are closed on cardiopulmonary bypass. Approach is through median stemotomy. Ascending aort
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