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 (/ËsuËmÉr/) was one of the ancient civilizations and historical regions in southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and the Early Bronze ages.umer (/ËsuËmÉr/) was one of the ancient civilizations and historical regions in southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and the Early Bronze ages.