Free electrons are produced in ß- decay, the first electrons were produced in the big bang
The electrons that are passed to NADPH during noncyclic photophosphorylation were obtained from water. The ultimate electron and hydrogen acceptor in the noncyclic pathway is NADPH+.
thylakoids
thylakoids
chlorophyll; water
Hydrogen ions are pumped across the mitochondria's inner membrane producing a concentration gradient
The electrons are passed down the electron transport chain for use in ATP production.
electron transport chain
High-energy electrons from NADH and FADH2 are passed along the electron transport chain
The electrons of the permanent magnet would align the way the electromagnetic field passed through the magnet.
The high-energy electrons in the electron transport chain are derived from molecules like NADH and FADH2, which are generated during cellular respiration in processes like glycolysis and the citric acid cycle. These molecules donate their electrons to the chain, where they are passed down through a series of protein complexes to generate ATP.
Electrons (sub atomic negatively charged entities) can only move (or be conducted) in environments which allow them to be passed on. Conducting structures consist of the atoms (or groups of atoms) which have electrons that are not fixed to it and can be passed on to other atoms (or groups of atoms) which in turn can also do the same. There are a variety of different media which allow for electrons conduction, such as metals and conducting polymers.
electron transport chain