Electron Transport Chain When NADH delivers high energy electrons to the first carrier of the electron transport chain, enough energy is captured by the time the electrons are received by O2 to permit the production of three ATP molecules.
67 days of darkness. Even though residents of Barrow, the northernmost town in Alaska, won't see the sun for 67 days come winter, they enjoy the midnight sun all summer-over 80 days of uninterrupted daylight.
Average Daylight Hours. During the winter, Alaskan cities' daylight can range from as little as 4-5 hours up to a full 24 hours at the height of summer. Daylight averages in Anchorage during the peak visitor season (May through September) are from 14-17 hours.