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.
June, July & August -- Summer in Alaska is a miraculous time, when the sun refuses to set, the salmon run upriver, and people are energized by limitless daylight. The sun dips below the horizon in Anchorage for only about 4 hours on June 21, the longest day of the year, and the sky is light all night.