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(cell) membrane. flexible boundary between the cell and the environment composed of phospholipid bilayer; allows materials to enter and exit cell; found in animal, plant and bacterial cells (in all cells).