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.
All prokaryote and eukaryote cells have plasma membranes. The plasma membrane (also known as the cell membrane) is the outermost cell surface, which separates the cell from the external environment. The plasma membrane is composed primarily of proteins and lipids, especially phospholipids.