Decades: 1230s 1240s 1250s 1260s 1270s - 1280s - 1290s 1300s 1310s 1320s 1330s
Years: 1280 1281 1282 1283 1284 - 1285 - 1286 1287 1288 1289 1290
Births
Deaths
... photosystems. First, a photon is absorbed by the chlorophyll core of photosystem II, exciting two electrons which are transferred to the primary acceptor protein. Th ...