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 company is a group of people organized for any business purpose (for example a restaurant, factory, store, or insurance sales). A factory is one kind of company that â¦ specifically produces items (such as computer, sofa, car). 23 people found this useful. Notyouraveragedummy ... business is a way of making money. You do not have to be a company to run a business, â¦ many people work and earn money without having a formal company. I have a business that generates a small amount of income each year.