BIOLOGY
ENZYMES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ascorbate
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Ascorbic acid
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Dehydroascorbic acid
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Hydroascorbic acid
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Detailed explanation-1: -The active form of vitamin C is ascorbate (reduced form); it is converted to dehydroascorbate (oxidized form) during enzymatic reaction or antioxidant activity, and then recycled back to ascorbate by dehydroascorbate reductase.
Detailed explanation-2: -According to the oxidation-reduction reactions, ascorbic acid is the reduced form of vitamin C while dehydroascorbic acid is the oxidized form of vitamin C. The l-isomer of ascorbic acid is the only active form. Other isomers as d-ascorbic acid, d-isoascorbic acid and l-isoascorbic acid are present.
Detailed explanation-3: -Vitamin C, also known as L-ascorbic acid, is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement. Humans, unlike most animals, are unable to synthesize vitamin C endogenously, so it is an essential dietary component [1].
Detailed explanation-4: -Ascorbate is an excellent reducing agent and readily undergoes two consecutive, one-electron oxidations to form ascorbate radical (Asc•−) and dehydroascorbic acid (DHA).
Detailed explanation-5: -Vitamin C (ascorbic acid) is a nutrient your body needs to form blood vessels, cartilage, muscle and collagen in bones. Vitamin C is also vital to your body’s healing process.