Vitamins are organic chemicals that a given living organism requires in trace quantities for good health, but which the organism cannot synthesize, and therefore must obtain from its diet.
Vitamin B12 and folate are distinct nutrients that differ in their synthesis and uptake from the diet.
vitamin
substance that is essential for the proper metabolism and regulation of body processes; vitamins were so named because they were though [thought] originally to contain an amine radicle, which is incorrect ...
Vitamin
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vitamin B1
(Science: biochemistry) A member of the water-soluble B vitamin group, necessary for energy production and carbohydrate metabolism. Deficiency is known as beriberi.
Vitamins (Act as Cofactors or Coenzymes)
Vitamins are medium sized biomolecules which contain carbon and are, therefore, organic molecules.
Vitamin
An organic compound that is required in relatively small amounts for growth of an organism. Vitamins often function as coenzymes.
vitamins A diverse group of organic molecules that are required for metabolic reactions and generally cannot be synthesized in the body.
vulva A collective term for the external genitals in women.
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Vitamin A (Retinol)
Functions: Multiple, including serving as the precursor to retinal, the prosthetic group of all four of the light-absorbing pigments in the eye and regulating gene expression essential for the health of epithelia.
vitamin
[L. vita, life]
An organic molecule required in the diet in very small amounts; vitamins serve primarily as coenzymes or parts of coenzymes.
viviparous ...
Vitamins: Various substances that are essential in minute quantities to the nutrition of animals and plants.
Xenotransplantation: Transplantation of cells, tissues, or organs from one species to another.
Zygote: A fertilized oocyte.
Why are vitamins lacking in rice?
First of all, you need to realize that rice when it's consumed is polished. The outer layers of rice are removed in the process of storing rice. If they're not removed, the rice will turn rancid and spoil.
Vitamin. Chemical substances required in trace concentrations acting as a cofactor with enzymes in catalyzing biochemical reactions
Viviparous (development). Refers to development of an organism through the juvenile stage within a parent ...
Vitamin A is found in dark green, leafy vegetables, carrots, and some fruits.
Vitamin C is found in citrus fruits. In addition to its antioxidant properties, it also prevents the conversion of nitrates to a carcinogenic form called nitrosamines.
vitamin An organic substance other than a carbohydrate, lipid, or protein that is needed for normal metabolism but cannot be synthesized in adequate amounts by the body.
vitamins
Under Construction
Your Digestive System and How it Works National Institute of Health provides a summary.
The Digestive System Page This page takes a very long time to download a large number of impressive photographs of the system.
Niacin Vitamin B3
(nicotinic acid; -in = in‚ into)
Niche the functional role of a species in its environment‚ including its activities‚ "job‚" relationships‚ and location
(nidus = nest) ...
Ascorbate (vitamin C) A water-soluble vitamin that functions as an antioxidant and is required for the hydroxylation of collagen; scurvy results if ascorbate is deficient.
Ascorbic acid (vitamin C) was dissolved in ethanol and allowed to recrystallize through evaporation. The crystal was photographed between crossed polarizing filters. Other crystals are on exhibit in "CRYSTALS alive!" ...
An organic molecule, such as a vitamin, that binds to an enzyme and is required for its catalytic activity. Cofactor. See Coenzyme. Colony. A group of identical cells (clones) derived from a single progenitor cell. Commensalism.
The first step in the transduction of light energy to a neural signal is the light-induced isomerization (change of shape) of a chromophore, specifically a vitamin A derivative. Each chromophore is bound to a membrane protein called an opsin.
Enzymic antioxidants are mostly inactivated in food processing but the non-enzymic ones can be active also in heat-treated food and might also be active after consumption of the food, as is claimed with b-carotene, and vitamins A and E.
There are many disease related to missing individual vitamins and minerals including scurvy (vitamin C), beri beri (vitamin B1), or a goiter (iodine).
For example, one species that lives symbiotically in the large intestine manufactures vitamin K, an essential blood clotting factor. Other species are beneficial indirectly. Bacteria give yogurt its tangy flavor and sourdough bread its sour taste.
- a part of the chemical family called carotenoids. It is a precursor for Vitamin A and has anti-oxidant properties
B lymphocytes (B cells)
- A type of cell that produces antibodies.
Auxotrophic algae: Algae requiring a few organically derived substances, such as vitamins, along with dissolved inorganic nutrients for photosynthesis.
B ...
Some of these companies make dubious claims about how the kits not only test for disease but also serve as tools for customizing medicine, vitamins, and foods to each individual's genetic makeup.
Methylmalonic acidemia -- a group of conditions characterized by the inability to metabolize methylmalonic acid or by a defect in the metabolism of Vitamin B12.
 See also: Organ, Trans, Protein, Cells, Human
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