11. In " The Master Switch ", Wu described the Kronos Effect as critical to the history of information technology. 12. The central nervous system contains the neurons of the brain and spinal cord, and serves as the body's master switch . 13. But they can tell from its structure that it is a master switch whose role is to activate other genes. 14. There is a series of switches on the front to control each peripheral, and a master switch that shuts everything off. 15. Other genes make factors that act as master switches , turning yet other genes on and off at particular points in development. 16. Lacking a master switch , it had to deploy workers to turn off about 10, 000 lighted billboards across Ontario one by one. 17. It has been referred to as a metabolic master switch , because its activity is regulated by the energy status of the cell. 18. Other items to consider are power strips with plug-ins for all electronic equipment and a master switch to turn everything off at once. 19. The master switches had been thrown off by the force of the explosion, but they were quickly switched on again by an electrician. 20. The protein, known as Runx or core binding factor A, has been called the " master switch " for bone-making cells, called osteoblasts.
