In this situation, translation begins at the 5' end of the mRNA while the 3' end is still attached to DNA. In all types of cells, the ribosome is composed of two subunits: the large (50S) subunit and the small (30S) subunit (S, for svedberg unit, is a measure of sedimentation velocity and, therefore, mass).
The most common types of nuclear power plants use water for cooling in two ways: 1  To convey heat from the reactor core to the steam turbines. 2  To remove and dump surplus heat from this steam circuit.
This is where chillers come in. A chiller can be used to cool any machine or process that operates at 60Â° F or lower. A cooling tower can be used to cool any machine or process that operates at 85Â° F or higher. Some of the more common applications are listed below: