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The original USB standard version has been superceded by hi-speed versions. A hi-speed USB host controller refers to the hardware inside the computer that provides hi-speed USB functionality to the ports. USB first hit the market in November 1995, but the new standard had compatibility problems. These bugs were addressed and the subsequent USB version is now referred to as âoriginalâ USB 1.1.