Oxygen transport chain

The oxygen transport chain, also known as the electron transport chain, is a series of processes in cells that produce energy. It occurs in the mitochondria, the cell's power plants. Here, electrons from nutrients are passed through molecules, creating a flow that drives the movement of protons across a membrane. This movement generates a difference in charge, which is used to produce a molecule called ATP—the primary energy source for cells. Oxygen acts like a final "acceptor" for these electrons, allowing the process to continue efficiently and ensuring cells get the energy they need to function properly.