Vitamin C?

Vitamin C biochemistry?

• 1)How does vitamin C protect cells from free radicals? 2) What does it can synthesise collagen and carnitine mean? 3) Why does lots of sugar in the blood slow the transport of vitamin C? 4) What is Oxidative stress? 5)How can it help the plant with stresses such as UV radiation? 6)How does cooking vegetables reduce the concentration of vitamin c? 7)How does temp. effect vitamin c? 10 points for top answer

• Answer:

  Ascorbate usually acts as an antioxidant. It typically reacts with oxidants of the reactive oxygen species, such as the hydroxyl radical formed from hydrogen peroxide. Such radicals are damaging to animals and plants at the molecular level due to their possible interaction with nucleic acids, proteins, and lipids. Sometimes these radicals initiate chain reactions. Ascorbate can terminate these chain radical reactions by electron transfer. Ascorbic acid is special because it can transfer a single electron, owing to the stability of its own radical ion called "semidehydroascorbate", dehydroascorbate. The net reaction is: RO• + C6H7O− 6 → ROH + C6H6O-• Wikipedia