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 or Cell Membrane. Fluid, semipermeable, lipid bilayer that surrounds all cells; provides support and protection; serves as a barrier between the cell and environment; controls the movement of materials in and out of the cell; helps to maintain homeostasis (biological balance)