The processes that use the mechanisms are: Cellular respiration â ATP is generated by oxidation of organic molecules, the passage of electrons down an electron transport chain, and chemiosmosis. The final electron acceptor is almost always inorganic. Aerobic â the final electron acceptor is O 2.
The Sumerians lived in Mesopotamia around 4000 BC. Mesopotamia or the Fertile Crescent was a region in the Middle East between the Tigris and Euphrates rivers, in the territory of modern Iraq, Iran and Syria.
Sumer was the southernmost region of ancient Mesopotamia (modern-day Iraq and Kuwait) which is generally considered the cradle of civilization.The name comes from Akkadian, the language of the north of Mesopotamia, and means âland of the civilized kingsâ.t is generally accepted that the first cities in the world rose in Sumer and, among the most important, were Eridu, Uruk, Ur, Larsa, Isin, Adab, Kullah, Lagash, Nippur, and Kish. The city of Uruk is held to be the first true city in the world.