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 ...

Sodium is in group 1. A sodium atom has one electron in its outer shell. The atom is more stable if it has a full outer shell. A sodium atom can lose its outer electron. It will still have 11 positive ...

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 ...