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.
most of the cities were centers of trade, learning and religion but the people who lived on the countryside were still ruled by the nearby city Why were the city-states of Sumer so successful? They were located at the mouth of the rivers where the fertile soil was so they grew many crops What were the houses made of in Sumer