enzymic pathways leading to the addition of oxygen or removal of hydrogen from intermediates in the pathway. oxidative phosphorylation. the mitochondrial process by which the free energy from the oxidation of intracellular substrates is made available in the form of ATP for cellular endergonic processes.okâ²sidÄâ²tiv]. an ATP-generating process in which oxygen serves as the final electron acceptor. The process occurs in mitochondria and is the major source of adenosine triphosphate generation in aerobic organisms.
Mexico Cholula de Rivadavia. The largest pyramid, and the largest monument ever constructed, is the QuetzalcÃ³atl Pyramid at Cholula de Rivadavia, 101 km (63 miles) south-east of Mexico City. It is 54 m (177 ft) tall, and its base covers an area of nearly 18.2 ha (45 acres). Its total volume has been estimated at 3.3 million mÂ³ (166,538,400 ftÂ³)compared with the current volume of 2.4 million mÂ³ (84,755,200 ftÂ³) for the Pyramid of Khufu or Cheops.
The Egyptian pyramids are ancient pyramid-shaped masonry structures located in Egypt. As of November 2008, there are sources citing both 118 and 138 as the number of identified Egyptian pyramids. Most were built as tombs for the country's pharaohs and their consorts during the Old and Middle Kingdom periods.everal of the Giza pyramids are counted among the largest structures ever built. The Pyramid of Khufu at Giza is the largest Egyptian pyramid. It is the only one of the Seven Wonders of the Ancient World still in existence.