The three golden lions on a red background, symbolising England, occupy the first and fourth quarters. The Arms of Scotland, a red lion rearing on its hind legs inside a red border, are in the second quarter, and the Arms of Ireland's golden harp with silver strings on a blue background-are in the third quarter.
Once it is reduced to QH2, ubiquinone delivers its electrons to the next complex in the electron transport chain. Q receives the electrons derived from NADH from complex I and the electrons derived from FADH2 from complex II, including succinate dehydrogenase. This enzyme and FADH2 form a small complex that delivers electrons directly to the electron transport chain, bypassing the first complex.
Catalyzes reactions in the Calvin cycle, glucose synthesis. biosynthetic and energy-producing functions of NADP + and NAD + . NAD + and NADP + act as electron acceptors in oxidoreductase catalyzed reactions; NADH and NADPH act as electron donors. The transfer of hydrogen to NAD + is stereospecific, and dehydrogenases are now classified as H A side or H B side enzymes, according to the side of the NAD molecule they act on.