Steroid hormones pass through the cell membrane and bind to a specific steroid hormone receptor protein. The combined steroid and receptor protein then bind to a specifiâ¦c sequence of bases in the DNA molecule. This sequence of bases is part of the promotor of a gene.   Binding of the steroid - receptor complex either activates (switches on) or represses (switches off) the gene which is controlled by that promotor.
A port replicator is an attachment for a notebook computer that allows a number of devices such as a printer, large monitor, and keyboard to be simultaneously connected.
The USB 3.0 port replicator can be used as a kind of docking station. Hook the keyboard, mouse, monitor(s), speakers and anything else to it and leave it as your workstation. If you do not need to game, the device I linked actually has a pair of HDMI ports that will provide extended desktop.