Mitochondria arose through a fateful endosymbiosis more than 1.45 billion years ago. Many mitochondria make ATP without the help of oxygen. Aa Aa Aa What variety is there in mitochondria?

In most cells, respiration takes place in tiny organelles called mitochondria, which are found in the cytoplasm. These organelles are sometimes called "cellular power plants." The fundamental ...

Our cells use oxygen to generate energy by burning nutrients to keep various processes in the cell working. While making this energy in the mitochondria (the cell’s power plants), the cell also ...