An acetylcholine receptor (green) forms a gated ion channel in the plasma membrane. This receptor is a membrane protein with an aqueous pore, meaning it allows soluble materials to travel across the ...

Scientists have discovered an entirely new class of ion channels. These channels let protons (H+ ions) into cells, are important in the inner ear for balance, and are present in the taste cells that ...

The W value, defined as the average energy required to form an ion pair, has been measured for xenon for bombarding electrons in the energy range 0 to 50 eV and for photons of energy between 12 and 90 ...