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.
Two of the phosphates are easily broken down to release energy and are added in a covalent bond during processes like respiration. ATP is the source for driving active transport and reactions like cellular respiration and photosynthesis. ATP is broken down by hydrolysis. This results in adenosine diphosphate and an inorganic phosphate. Along with this comes the release of energy which can be used all through-out the system. Taking this step one further you can produce AMP, which contains only one phosphate group.