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.
Located in what the ancient Greeks called Mesopotamia, which literally means the land between the rivers, Sumer was a collection of city-states that occupied the southernmost portion of Mesopotamia. Most were situated along the Tigris and Euphrates Rivers, lying just north of the Persian Gulf.hese accomplishments and more were the products of the city-states of Sumer, which arose on the flood plains of the Tigris and Euphrates Rivers in what is now modern-day Iraq.