When Mass begins, the Chalice is covered by the folded purificator and the pall (see below). Paten. The consecrated gold or gilded silver plate on which the Sacred Host is laid. Only priests or deacons are allowed to touch the Paten (though sacristans may in the course of their duties). A Communion Paten has a handle and is held under the chin of one receiving the Eucharist so that in case the Host is dropped, it won't fall to the floor.
1 Cells require a constant supply of energy to survive, but cannot store this energy as free energy as this would result in elevated temperatures and would destroy the cell. 2  Cells store energy in the form of adenosine triphosphate, or ATP.  Energy is released when the terminal phosphate group is removed from ATP.
This occurs when a molecule of adenosine diphosphate (ADP) uses the energy released during cellular respiration to bond with a third phosphate group, becoming a molecule of ATP. So the energy from cellular respiration is stored in the bond between the 2nd and 3rd phosphate groups of ATP. When the cell needs energy to do work, ATP loses its 3rd phosphate group, releasing energy stored in the bond that the cell can use to do work. Now its back to being ADP and is ready to store the energy from respiration by bonding with a 3rd phosphate group. ADP and ATP constantly convert back and forth in this manner.