Decades: 1220s 1230s 1240s 1250s 1260s - 1270s - 1280s 1290s 1300s 1310s 1320s
Years: 1270 1271 1272 1273 1274 - 1275 - 1276 1277 1278 1279 1280
Births
Deaths
... by the chlorophyll core of photosystem II, exciting two electrons which are transferred to the primary acceptor protein. The deficit of electrons is made up for by ...