We saw in Chapter 15 that a voltage gradient, also called an electric potential, exists across the plasma membrane of all cells. The potential across the plasma membrane of large cells can be measured with a microelectrode inserted inside the cell and a reference electrode placed in the extracellular fluid.
A production company is responsible for the development and filming of a specific production or media broadcast. In entertainment, the production process begins with the development of a specific project.
A production operator, also known as a machine operator, uses equipment to assist with manufacturing, packaging, and other steps along a production line. While the exact duties may vary from company to company, a production operator may be expected to handle heavy machinery such as forklifts. On-the-job training may be available.