Cellular respiration. Molecular oxygen, O2, is essential for cellular respiration in all aerobic organisms. Oxygen is used as an electron acceptor in mitochondria to generate chemical energy. Take a look inside the cell to see these powerhouses of the cell, petite organelles mitochondria, click here.
Legg Perthes Disease in Dogs. Definition. Legg Perthes Disease, also known as aseptic necrosis of the femoral head, Legg-Calve-Perthes Disease, Perthes Disease or simply Leggâs Disease, is a condition that involves spontaneous disintegration and collapse of the top of a dogâs long thigh bone, the femur, which connects the knee to the hip. The cause of this disease is not known.
Perth (/ËpÉrÎ¸/ ; Scottish Gaelic: Peairt [ËpÊ°ÉuÉ¾tÌª]) is a city in central Scotland, located on the banks of the River Tay.It is the administrative centre of Perth and Kinross council area and the historic county of Perthshire.erth also has a number of twin cities around the world. These are: Aschaffenburg in Germany, Bydgoszcz in Poland, Haikou, Hainan in China, Perth (Ontario) in Canada, Pskov in Russia and Cognac in France.