Digital Marketing is the pratice of promoting products and services using database-driven online distribution channels to reach consumers in a timely, relevant, personal and cost-effective manner. Broadband Internet, WiFi and phone Web access are also spurring growth worldwide.
The plasma membrane is an outer boundary and functional traffic-cop of every biological cell. Just like the outer layers of multicellular organisms, its primary function is to contain, protect and provide unit structure.
plasma membrane (plasmalemma; cell membrane) The partially permeable membrane forming the boundary of a cell. It consists mostly of protein and lipid (see lipid bilayer; fluid mosaic model) and plays various crucial roles in the cell's activities.