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.
the plasma membrane the plasma membrane is composed of phospholipids and proteins that provide a barrier between the external environment and the cell regulate the transportation of molecules across the membrane and communicate with other cells via protein receptors