Vitamin C contributing to the more severe symptoms of scurvy. More generally, the biochemical role of vitamin C is to act as an antioxidant (a reducing agent) by donating electrons to various enzymatic and non-enzymatic reactions. Doing so converts vitamin C to an oxidized state - either as semidehydroascorbic acid or dehydroascorbic acid. These compounds can be restored to a reduced state by glutathione and NADPH-dependent enzymatic mechanisms. In plants, vitamin C is a substrate for ascorbate peroxidase. This enzyme utilizes ascorbate to neutralize toxic hydrogen peroxide (HO) by converting it to water (HO). Scurvy is a disease resulting from a deficiency
History of the Royal Navy would be constructed. The Navy took part in the 2003 Iraq War which saw RN warships bombard positions in support of the Al Faw Peninsula landings by Royal Marines. Also during that war, and launched a number of Tomahawk cruise missiles at targets in Iraq. In 2004, Iranian armed forces took Royal Navy personnel prisoner, including Royal Marines, on the Shatt al-Arab (Arvand Rud in Persian) river, between Iran and Iraq. They were released three days later following diplomatic discussions between the UK and Iran. In August 2005 the Royal Navy rescued seven Russians stranded in a submarine off the