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 were polytheistic, which means they believed in many gods. The Sumerians worshiped their gods at huge temples they called ziggurats. They dedicated each ziggurat to a different god, whom the Sumerians believed ruled over their city-state. When a city was conquered, the invaders would force the conquered people to accept their gods. Most people in the Western Hemisphere today practice monotheism. This means they believe in only one God.