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.
The Sumerians. Sumer, also known as the âland of the civilized kings,â was a flourishing civilization located in modern day Iraq (known as Mesopotamia in ancient times) around 4500 BC. The Sumerians had a rather advanced civilization with their own elaborate language and system of writing.